I own a 6 speed GTP Coupe. Shifting too second and third gears (and some times to 6th) is very stiff. I even feel the ' GEARS ' in the shifter. Dealer ajusted a cable for the 6th and it partly fix this gear but it still hard to get it in gear if the engine is HOT. I was wandering if this is a problem with other GTP's 6 speed G6 by Pontiac ???

Oh ya! Every time I shut the engine off, there is a loud CLIK coming from the front of the engine. At the beginning it's cliking fast and after a few second the cliking is less faster, but it will click for at least 5 minutes.... I wander if there is a relation ????

For the rest this car is great ! But Who decided to put the third brake light is the rear window ?%?%?%?% Can't see what's happening behind the car ! !! ! ! !

I own a 6 speed GTP Coupe. Shifting too second and third gears (and some times to 6th) is very stiff. I even feel the ' GEARS ' in the shifter. Dealer ajusted a cable for the 6th and it partly fix this gear but it still hard to get it in gear if the engine is HOT. I was wandering if this is a problem with other GTP's 6 speed G6 by Pontiac ???

Oh ya! Every time I shut the engine off, there is a loud CLIK coming from the front of the engine. At the beginning it's cliking fast and after a few second the cliking is less faster, but it will click for at least 5 minutes.... I wander if there is a relation ????

For the rest this car is great ! But Who decided to put the third brake light is the rear window ?%?%?%?% Can't see what's happening behind the car ! !! ! ! !

The clicking is the heat shields cooling down, its normal especially on new cars. I also have the problem with second and third, sometimes it even grinds, it sound to be just and adjustment issue. A buddy of mine is a GM tech and he has had to adjust 2 or 3 of them so far.

Went to the dealer today. The only thing the mechanic could do is to do some bending of the linkage between the shifter and the transmission using a very large screw driver. Just like we where doing on those old Camaro and Vettes in the early 70's, I don't find this has a solution because after a few miles I still can feel the GEARS rolling into the shifter on 2nd and 3rd, which I don't feel in 4,5,6.

Next step will be to test drive an other GTP 6 speed at a dealer and compare the feeling by myself.

GM mechanics don't have any specs for ajusting this new transmission.... They are learning upon every case they get, but since 6 speed are scarse, they really don't know how to ajust or fix this tranny...

Will keep posted a the next step....

Went to the dealer today. The only thing the mechanic could do is to do some bending of the linkage between the shifter and the transmission using a very large screw driver. Just like we where doing on those old Camaro and Vettes in the early 70's, I don't find this has a solution because after a few miles I still can feel the GEARS rolling into the shifter on 2nd and 3rd, which I don't feel in 4,5,6.

Next step will be to test drive an other GTP 6 speed at a dealer and compare the feeling by myself.

GM mechanics don't have any specs for ajusting this new transmission.... They are learning upon every case they get, but since 6 speed are scarse, they really don't know how to ajust or fix this tranny...

Will keep posted a the next step....
Mine was in today, the couldent reproduce the problem. but for some reason its doing it alot less now.

Edit, It dosnt do it at all anymore.

So as I said the "Couldn’t reproduce the problem" Well well well, I had a look at my linkage and it was slightly bent! They knew exactly what was wrong and fixed it, but refused to admit to it! lol

After they palyed priying the linkage bracket, the cold weather came in. It was 25 degrees in Montreal Canada. I could'nt even shift from 1st to 3dr... Priying a braket don't seem to be the solution, so I will get the car back to the dealer and this time priying a braket won't be accepted as a solution...

Got the car to the dealer. They kept it overnight to test the shifter when very cold. Finaly they will replace the shifter cable(s) and it should (I hope) fix the problem. The cable has been ordered, I will get it replaced sometime next week. Will keep you informed.

Vette79, I have the same problem when it's cold out. I can't shift it back into 1st, unless I'm at a dead stop. If I run it through the gears at a stop light, that seems to loosen or warm it up quicker. I need to take it to the dealer, but I was waiting for cold weather to set in, so they would be able to reproduce the problem. Please let me know what your dealer ends up doing for you.

The part will come in mid december. I will post the results. Thanks.

Did the part come in yet? It's been unseasonably warm around here lately and I haven't had too much of a problem yet.

doesn't it use the F40, as in the 6 spd. from the 9-3?

it's not like this is a brand new tranny...

doesn't it use the F40, as in the 6 spd. from the 9-3?

it's not like this is a brand new tranny...
I'm not sure I understand your point? It's not new, but we're having a problem, and if we can't recreate it, they can't fix it.

I'm not sure I understand your point? It's not new, but we're having a problem, and if we can't recreate it, they can't fix it.

my point is that it's not a new tranny, and you shouldn't be having any issues. i'll take a wild guess and say that if they do re-create it, it'll be considered "normal"

if not, they'll likely tell you you're not pushing the clutch to the ground between shifts, since they can't duplicate (could be the issue...).

another reason i mention that is you might want to see if the 9-3 has the same issue.

so in my eyes it's either an adjustment in the linkage that needs to be made, or the clutch is getting let out before completely in gear...

my point is that it's not a new tranny, and you shouldn't be having any issues. i'll take a wild guess and say that if they do re-create it, it'll be considered "normal"

if not, they'll likely tell you you're not pushing the clutch to the ground between shifts, since they can't duplicate (could be the issue...).

another reason i mention that is you might want to see if the 9-3 has the same issue.

so in my eyes it's either an adjustment in the linkage that needs to be made, or the clutch is getting let out before completely in gear...
I don't think I have an issue with the tranny, I believe the problem is in the gearbox. It may work fine in the 9-3, but that doesn't mean everything lines up perfectly in the G6. I would hope they don't consider something that works fine in warm temperatures, but has issues in cold temperatures, to be "normal". I'm sure they would tell me I'm not pushing the clutch in far enough, which is why I've been waiting for cold temperatures before demonstrating the problem. It's likely just a simple fix with the cable, which is why I was asking Vette if his problem was solved.

good luck with it either way. could be something simple like a tension spring as well.

i just hope for all your sakes that they don't have to rip up the tranny to fix it, i've yet to get a recall done on my car because of that (though i'm not sure i really notice the issue...)

The part has not yet arrived...... Xmass time?????
But the problem is still on, either cold or warm. It gets worst when I start very cold, the dealer found the same problem. I don't know if a cable change will fix the problem since I feel that the 2nd and 3dr gears doesn't seem to line up well, I am awaiting for the part and then I will see. By the way. I do press the clutch way down to the carpet, still have the same problem... Will keep you posted.

Got the car to the dealer january 18th. They changed the shifter cabels which is quite a big piece that took nearly 6 hours to replace.

Now the shifter is much smoother to handle, but the gringe is still present on 2nd, 3rd grears. So part of the problem is settled, but not all of it.

The mechanic admits that there is some abnormal friction on those gears, 4,5,6 are as natural as any other tranny on other cars. But second and third are'nt. Next step is to test drive the car for a few days, and if it's still the same they will have some DSM (District Service Manager ???) test the car for a decision. I though BLACKRIDER on this site did get a transmission change for the same problem, but actually they changed the shifter cable also, but the tranny seems not to have been changed ??? and he still has the 2nd, 3dr gears friction problem.

So if any of you had the problem solved, please advise me on my mail since a dealer name and a workshop information would help a lot. Will keep you posted.

Wonder if there could be something screwy with the tranny fluid?

Don't know what is wrong but I am not going to accept this situation for a car that I paid 33 500$ (CDN) + taxes + interests to GMAC. Next step will be to compare with an other car so to confirm that I'ts not a normal thing. My feeling is that there is some problems with some synchronisation parts for those 2 gears, if it where a fluid problemm I would expect to have the problem on all gears!

We will see.

More news. BLACKRIDER got in touch with me today and he actualy did get a tranny change but it's not 100% correct eventhough.

I asked him for more details so my dealer can verify with his dealer and get some action done,

This is a good example of the information and help we can get with this type of internet site. Hopefully with G6OC club it might make my life easier.

Thanks G6OC.

Thus far our car has been problem free for the transmission. No issues with it at all.

There are no service bulletins, prelim info or any other tech articles at all on the 6spd grinding issues that you and Jordie are experiencing. IF and When GM puts something out for a possible fix, You guys will be the first to know what the correction for the issue is.

Don't know what is wrong but I am not going to accept this situation for a car that I paid 33 500$ (CDN) + taxes + interests to GMAC. Next step will be to compare with an other car so to confirm that I'ts not a normal thing. My feeling is that there is some problems with some synchronisation parts for those 2 gears, if it where a fluid problemm I would expect to have the problem on all gears!

We will see.

What's really strange (at least in my case) I only have the grinding issue when it's cold. If it's warm about say 40F and up, or after I drive a few miles, I don't notice any issue. Also, I can shift back into first only when I'm stopped, so I believe something has to be screwed up with the synchos for the 1 and 2 gears. I still haven't taken it to my dealer since I haven't been able to leave my car there overnight to replicate the problem.

Can't wait for a service bulletin to come out, if my problem is a single issue. I don't see a tendency on different sites, except for one case. So I imagine that I have to do my own thing so to get some action. The grinding is really there, the mechanic admits it's not normal, and he needs a district service manager to get an OK because if he recommends to change the tranny and it does'nt fix the problem he could be responsible for the invoice.
Also, I'm affraid that it will get worst. Since they changed the cables 3 days ago, the shifter is much smoother because one of the 2 cables was really jammed. Now, when it's in 2nd, just touching the shifter will get the car in neutral, and I mean, just touching it (seems like the tranny want's to get out of gear by itself). Than it's hard to get in the 3rd gear. This is anoying in traffic, the car can go into neutral almost by itself and I have to concentrate on shifting and not the traffic. Also, if it's in 6th, it's impossible to shift directly into 3dr without going into 4th before. (Even if I take all the time for gears to synchronise)This is new since the cable change.
So I imagine that I have to do my own thing or there might never be any action from GM!

For those who are following this thread. I went to the dealer on feb. 8th. They test drive the car and found that the grinding is more evident with higher RPM which they could'nt explained. The DSM never drove a 6 speed G6 before and the dealer did'nt have one off hand to compare.

I expect their answer today.

I will be posting the results ASAP

Update Feb. 15

My tranny problem is under investigation at the Oshawa (Ont) tech. plant since Feb. 8th.

I am expecting some news sometime today. If they don't have a solution, I will press them to change the tranny, nothing else, or change the car. I cannot accept to drive such a messy shifter anymore.

TREVLYA006 who posted a bulltin on his thread did find somethins to solve the problem. He apparently works for a Chevy Dealer and he did some research and found an answer which is posted furthur down.

I have a rendez-vous at the dealer on Feb. 28.. At this time the dealer and the GM district Serive Manager are still wandering about the problem and after 4 months of complaints they finally got the DSM to test drive my car. They say they don't have any idea to stelle the problem, but somebody else found the solution.

The text below comes from TREVLYA006 who I'm thanking for the time he took to do some research and post the bulletin.

Will keep you posted with a report next week.

HERE IS THE TEXT:



Opel F40 6-Speed Manual Transaxle/Transmission Exchange Program (RPO MT2) #06-07-29-002 - (Feb 3, 2006)
Opel F40 6-Speed Manual Transaxle/Transmission Exchange Program (RPO MT2)
2006 Pontiac G6

with Transmission - Man 6 Spd, Opel, 83 mm, 3.77 1st, 0.62 6th (F40 WR) (RPO MT2)

This bulletin will cover the F40 6-Speed Manual Transaxle exchange program for the 2006 Pontiac G6. This exchange program will be in effect for approximately the first 12 months of vehicle production.

This exchange program will be administered by the GM Product Quality Center (PQC). To request an exchange, dealerships are required to call the PQC - not the Technical Assistance Center (TAC). The PQC may refer the dealer technician to TAC if additional diagnosis is required. Prior to calling the PQC, please make sure to complete the "OEM Manual Transmission Exchange Worksheet" referenced at the end of this bulletin. Use of this worksheet will minimize the time spent on the telephone and avoid the need of a second call to the PQC. Guidelines for honoring exchange requests under this program are being strictly enforced.

Components that may be removed and serviced without exchange of the transaxle are identified in the list below. Any repairs involving transmission components not identified in the table below may require a transmission exchange.

Please note that this list is subject to change as the program progresses. You will be notified by the PQC consultant if additional transaxle items are considered serviceable.

Current Serviceable Transaxle Related Components:

• Seal, Drive Axle
• Sensor, Vehicle Speed
• Switch, Back Up Lamp
• Pin, Clutch Housing Lock
• Plug, Trans Oil Drain
• Bolt, Vehicle Speed Sensor (VSS)
• Bolt, Vehicle Speed Sensor (VSS)
• Actuator, Clutch Asm
• Plug, Trans Fluid Fill
• Control, Shifter Assembly

All other components of the transmission require assembly replacement at this time.

Important: Transmission repairs or failures that are caused by components external to the transmission DO NOT fall under the exchange program. For example, transmission oil cooler lines incorrectly installed causing a transmission failure will have to go through GMSPO to obtain a transmission assembly. Also, transmissions needed for insurance repairs have to be obtained from GMSPO. The exchange program is created as a way to identify and correct internal concerns. External components causing a failure do not provide any useful information in improving a transmission. The transmission received from GMSPO will be a new transmission. As normal process, all warranty claims for transmission replacement must be approved through the PQC.

Exchange Procedure

A thorough diagnosis must be performed in order to prevent unnecessary component replacements. Refer to "Diagnostic System Check - Vehicle" in SI to identify the correct procedure for diagnosing the system.
Prior to calling the PQC, complete the "OEM Transmission Exchange" worksheet referenced at the end of this bulletin
Contact the PQC to verify that proper diagnosis has been performed. Upon review of the diagnosis, the PQC will establish a case reference number and make arrangements for shipping an exchange unit to your dealership if necessary. DO NOT SHIP A TRANSMISSION TO THE WARRANTY PARTS CENTER (WPC) WITHOUT AN OFFICIAL WPC REQUEST.
Important: Failure to return the replaced transmission by the due date will result in the dealership being debited the entire warranty claim (parts and labor). The removed unit must be returned complete in the shipping container. For effective engineering analysis, please do not remove or disassemble any components. The only exception to this is the fluid pan, which should be removed to drain the fluid prior to shipping. The pan must be reinstalled after fluid has drained. Dealerships returning transmissions that have been even partially disassembled will be judged as violating this procedure and, as such, will be billed for all materials furnished.

Warranty Information
For vehicles repaired under warranty, use:

Labor Operation K2720
Description Transmission/Transaxle Assembly - Replace
Labor Time Use Published Labor Operation time
Parts Allowance $337.50

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION


© Copyright General Motors Corporation. All Rights Reserved.
_______________________________________________

Confirmed Exchange Program.

I met with the District Service Magager ??? DSM today and both this person and a new service manager at this dealer akknowledged that the transmission Exchange Progran really exist.

The DSM did a test drive today and he will give me an answer on March 1st.

But what kind of frustrated me is that they know of the replacement program for some time but the dealer did'nt give me a call to advise that they found something new that will help me, and this since Feb. 8th. (today is Feb. 28). So this brings me to the conclusion that We Car Owners must insist on Follow-ups for our problems or most dealers won't do their best.

If I did'nt have the GM Exchange Program in my poket, I'm quite sure that the dealer would'nt have mention it. So this G6OC is very usefull for us. We need to keep to exchange and those with problems so have a better Car Life.

I will keep a post on March 1st. for their decision.

Vette
Can you explain how this exchange program works when you get more info. My GTP has 1200 miles now and is shifting better, not perfect like it should.

Thanks for the effort

NOW WILL HAVE TO FIGHT GM's ATITUDE!



The program does exist Confirm bY GM's District Service Manager) but still have to go through GM's unacceptable attitude NOT TO APPLY THE PROGRAM.

The GM DSM did try antother 6 speed which did have the same sympthoms that my car has.

His conclusion: YOUR CAR IS NORMAL !

Now, myself, have to test drive some other 6 speeders to prove my point which I will do on March 3 or 6. At this time I will make sure that the car is very cold ( - 14 degree celcius in Montreal now) Than they will see that you have to fight with the stick to change gears and that it's almost impossible to go bak to first (problem that has re-occured since 6-7 days now).

If, like the DSM said to me that GM did put such a tranny on the market, well, I'll have to go public because such a transmission is UNACCEPTABLE. I used to drive M21 and M22 trannies on some 70's Corvettes, which are not so easy to handle, and both are not so harsh to shift...

Once again, after almost 5 months stuggling to get some action done, GM will have me on the market for some other manufacturer cars, but prior to that they will have a fight.

Today I met with a second GM DSM, he drove my car and did'nt give any comment. I was suppose to drive an other 6 speeder for comparision purpose, the car that was prepared for this occasion and for me was an AUTOMATIC.

They had to prepare anotger 6 speeder but the car was on the lot since agust 2005 and the battery was dead. I mentionned that I wanted to test drive for a late 05 or early 06 production and I refused to compare with an earlier version than my car...

So I asked the DSM for his opinion:

He answered that he saw better and worst trannies. I accepted that there are better ones, but when I asked him which cars he tested with worst trannies, he couldn't reply. Than he said that his wife used to drive an 82 Chevelle that was shifting worst. HOW AMATEUR

Imagine, that's the only answer he coud give.

Even with that he refused to give me his proffessional opinion about the quality of the shifter on a 2006 G6... He admited that he never drove one prior to that, he doesn't have any experience with this product, but his PROFFESSIONAL OPINION is that his wife drove a 1982 Chevelle with a worst shifter.

So next step is to find, among Montreal's dealers, and other 6 seepder until I find at least one that is shifting normally. Other that that, I have to live with the problem.

Don't expect the GM Exchange Program to help you so easiely.....

Sorry for the errors, I'm a Frenchman.

I will keep you informed.

:mad: GM's rep. is still straight minded that my tranny is by GM's specs, although there are no specs. he can show me.

So I'm to find a good GTP with a good tranny. But there are almost none at the dealers at the present time.

I work for a major newpaper ( 2,000,000 readers) and I'm putting an ad to locate GTP 6 speed owners to contact me so I can test drive their cars and find at least one that's fine. This way I will be able to prove that my car has a problem.

GM rep. knows that there is a rarety on the market and that I wont be able to find a 6 speeder, but he does'nt expect that 2,000,000 people can be called on so I can get at least 1 fine tranny in Montreal (Canada) and put it in it's face...

So this is my next step. :D

Some good news today. After some thinking I've decided to find an other manual by myself, so I passed an ad in a major newspaper (which I work at) to locate 6 speed owners.

Today I got a call from a guy that owns one with NO SHIFTING PROBLEMS WHATSOEVER. And imagine, that guy works for an other major car dealer here in Montreal.

So tuesday I'm gonna get the oil change as schedule and afterword I'm meeting the other guy for a test drive.

If ever that other tranny is OK, GM will have to admit it's failure to settle this problem, fix the car and then they will get a letter stating that they just lost another unsatisfied customer.

So I keep my fingers crossed and I will post the results.

1. Got the oil changed:

Nothing happened, same dirty feeling.

2, I drove the other guy's 6 speeder, but it's even worst than mine It's a very early production). Can't understand that a Pontiac saleman, which he is, didn't even find that is tranny is a real mess. But it's his first manual.....ever.... so he's innocent.

Plan B:

a) I will get 3 transmission expert to evaluate the transmission and will get written reports.

b) I will get a fellow of mine who is an expert journalist and well known here in the Province of Quebec to do the same.

c) I will get the car traded in for another GM product (for politics).

d) Than I'll sue GM and the dealer for the lost in the trade in. Here in Quebec we have a Small Court Goverment thing and we can sue anyone upto 7,000$ and it cost only 35$ entry fee.

e) Due to my type of work, i've been to court many times in my life as an expert. This time I will get this expertise to get my money back.

So it is !!!

Thanks too all of those who wrote to me supporting my case, but if it's impossible to find a late 05 production or an early 06 to compare a good tranny against a bad one, than there is not much we can do.

This is my 27th car ever, and this tranny is the worst I ever drove, even on M-21 and M-22 Corvette's and Camaro's of the sixties and 70's, and those where the worst in their time, after 1982 Chevette, as I was told by a GM expert who drove a single G6 6 speeder in his career and made an expertise: You car is normal as for GM specs, but I cannot show you any specs, since there aren't any, but I saw worst than that on my wife's 82 Chevette. That's his expertise, what a crummy way to do business.

Don't ask yourselves why GM is going bankrupt, they're looking for it and doing what Asian car companies won't do so to stay in business and kill GM, Chrysler and Ford.

Hope too read your later with some evolution....

sucks that your having so many problems man.
just ebay it and buy a new one with an automatic :)
sticks are old school anyways.

I am glad that Nikki and myself have very good 6 speed manuals. All of the 6 MT's are not bad. I feel GM should have tested this F40 trannny more thoroughly, before putting it into production. I believe this the first time the tranny was applied to a big V6(3.9L).It is unfortunate that vette79(Robert) had to go through all this hassle. I hope the resolution to his problem is fair and just. :)

What is frustrating is that there are some good trannies out there but I just can't find one here. If only I could find one and get GM to compare it with mine than I would be able to get thins moving...

My salesman (dealer) just found a late production about 100 miles from Montreal I think I should go and get a ride in it beefore trading mine and get into legal procedures...

I'm thinking about it !

What is frustrating is that there are some good trannies out there but I just can't find one here. If only I could find one and get GM to compare it with mine than I would be able to get thins moving...

My salesman (dealer) just found a late production about 100 miles from Montreal I think I should go and get a ride in it beefore trading mine and get into legal procedures...

I'm thinking about it ! If you could find a GTP built after 1/1/06, there should be no problem. The 6 MT's built after January 1, have short throw shifters. :)

That's my problem. My info's are that there where about 20 6 speeder delivered into Montreal area. Dealers still have over 10 in their garages and all of them are early editions.

I'm hoping that some dealer will get a late version in it's inventory, and than I could go and compare. My salesman is very cooperative with me in that research, so until something new, I'm still trying to find a late edition, some day some how one will come...

QUESTION: Is there a way to verify that a short throw is now instaled on new G6. GM reps. are denying this! or they are simply not aware ????

Quick question here:

What would a short throw shifter do to improve grinding gears/gears that are hard to shift in to? From the info I have, the new shifter gives a better feel through the shorter throws.

SCGA1
[/quote] I would say the grinding issue and hard gear issues are nil, with the new shifter. There should be no problems.

I don't know technical wise, but I sure would like to drive one so to compare with my shitter, sorry, shifter.

If GM changed something, there are reasons, they just don't change a component without a motive...!

Quick question here:

What would a short throw shifter do to improve grinding gears/gears that are hard to shift in to? From the info I have, the new shifter gives a better feel through the shorter throws.

SCGA1
I would say the grinding issue and hard gear issues are nil, with the new shifter. There should be no problems.

I'd say that someone clicked on the wrong button. ;) :rolleyes:

Robert,

I do wish you luck. My car was produced in September. I may be making a trip to Longieul next month, so maybe we can get together for a short time to compare tranny's? I'd like to know if mine is as bad as yours.

I work about 10 minutes away from Longueuil. So if you're in town on week days it would be very easy for me to meet you.

If it's on a week end, I'm about 35 minutes away and still it would be possible.

Keep me posted with details.

Sounds good. I'll let you know when I finalize my plans.

edit: I never seem to spell Longueuil correctly. :( I'll probably be staying at the Best Western on Taschereau in Brossard.

I will check this thread for some news from you or you can email on my private mail. Thanks.

This is all I could find real quick, I'll ask my parts girl (don't laugh she is one of the best in the country literally) if there are any part# changes. I also found a document stating that all 6-speed trannys are on exchange for the first 12 months of production in the G6's for engineering purposes they are not to be rebuilt but replaced. Also, I can tell you that it is an Opel tranny.
--------------------------------------------------------------------------------


Subject: Info - Manual Transmission Operating Characteristics #03-07-29-004B - (08/30/2005)



Models: 2006 and Prior Passenger Cars and Light Duty Trucks

2006 and Prior Chevrolet and GMC Medium Duty Trucks

2006 and Prior Isuzu Medium Duty Trucks

with Manual Transmission




--------------------------------------------------------------------------------

This bulletin is being revised to include additional models and model years. Please discard Corporate Bulletin Number 03-07-29-004A (Section 07 -- Transmission/Transaxle).


--------------------------------------------------------------------------------

Important: Even though this bulletin attempts to cover operating characteristics of manual transmissions, it cannot be all inclusive. Be sure to compare any questionable concerns to a similar vehicle and if possible, with similar mileage. Even though many of the conditions are described as characteristics and may not be durability issues, GM may attempt to improve specific issues for customer satisfaction.

The purpose of this Service Bulletin is to assist in identifying characteristics of manual transmissions that repair attempts will not change. The following are explanations and examples of conditions that will generally occur in all manual transmissions. All noises will vary between transmissions due to build variation, type of transmission (usually the more heavy duty, the more noise), type of flywheel and clutch, level of insulation, etc.


Basic Information
Many transmission noises are created by the firing pulses of the engine. Each firing pulse creates a sudden change in angular acceleration at the crankshaft. These changes in speed can be reduced with clutch damper springs and dual mass flywheels. However, some speed variation will make it through to the transmission. This can create noise as the various gears will accel and decel against each other because of required clearances.


Gear Rattle
Rattling or grinding (not to be confused with a missed shift type of grinding, also described as a combustion knock type of noise) type noises usually occur while operating the engine at low RPMs (lugging the engine). This can occur while accelerating from a stop (for example, a Corvette) or while operating at low RPMs while under a load (for example, Kodiak in a lower gear and at low engine speed). Vehicles equipped with a dual-mass flywheel (for example, a 3500 HD Sierra with the 6-speed manual and Duramax®) will have reduced noise levels as compared to vehicles without (for example, a 4500 Kodiak with the 6-speed manual and Duramax®). However, dual-mass flywheels do not eliminate all noise.


Neutral Rattle
There are often concerns of rattle while idling in neutral with the clutch engaged. This is related to the changes in angular acceleration described earlier. This is a light rattle, and once again, vehicles with dual mass flywheels will have reduced noise. If the engine is shut off while idling in neutral with the clutch engaged, the sudden stop of the engine will create a rapid change in angular acceleration that even dual mass flywheels can not compensate. Because of the mass of all the components, this will create a noise. This type of noise should not be heard if the clutch is released (pedal pushed to the floor).


Backlash
Backlash noise is created when changing engine or driveline loading. This can occur when accelerating from a stop, coming to a stop, or applying and releasing the throttle (loading and unloading the driveline). This will vary based on vehicle type, build variations, driver input, vehicle loading, etc. and is created from the necessary clearance between all of the mating gears in the transmission, axle(s) and transfer case (if equipped).


Shift Effort
Shift effort will vary among different style transmissions and synchronizer designs. Usually the more heavy duty the transmission, the higher the shift effort because of the increased mass of the components. Shift effort can also be higher in cold weather because the fluid will be thicker. Medium duty transmissions will not shift as quickly as a Corvette transmission. To reduce shift effort, do not attempt to rush the shift - allow the synchronizers to work as designed. Shifting harder will only increase the chance of rushing past the synchronizer leading to grinding while shifting.


Non-Synchronized Gears
Some light duty truck transmissions in 1st gear (creeper-gear) and reverse gears in various transmissions, along with all gears in some medium duty transmissions, may be non-synchronized. This means there is not a mechanism to match input and output shaft speeds to allow for a smooth shift. This function is left up to the driver. This can be noticed if a shift into 1st or reverse is attempted while the vehicle is rolling or before the input shaft stops rotating leading to a gear grind. The grinding can be reduced by coming to a complete stop and pausing for a moment before shifting into the 1st or reverse gear. Some slight grinding can be expected. In medium duty non-synchronized transmissions, the driver must match input shaft (engine) speed to output shaft (driveshaft) speed with every shift. This can be accomplished by double clutching, or by using other methods. If the driver is not able to perform this function properly, there will be gear grinding with each improperly completed shift. Driver training may be required to correct this condition. Clutch brakes are used in medium duty non-synchronized transmissions to allow a shift into gear at a stop. The clutch brake is used to stop the input shaft from spinning, allowing a shift into gear at a stop without grinding. The clutch brake is activated by pressing the clutch pedal all the way to the floor. When the clutch brake is used, it is possible to have a blocked shift with the vehicle stationary. If this occurs, engage the clutch slightly to rotate the input gear to allow the shift. The clutch brake is intended to only be used while at a stop. Care must be taken to not activate the clutch brake while shifting between gears. This could lead to excessive grinding or a blocked or missed shift.


Skip Shift
Currently, the Cadillac CTS-V, GTO, and Corvette (other models may follow) equipped with the 6-speed manual transmission have a feature referred to as a "skip-shift". This feature only allows a shift from 1st to 4th gear when the indicator lamp is illuminated on the dash. Dealers cannot disable this feature as it was established to help meet fuel economy standards. The conditions for this feature are: engine coolant at normal operating temperature, vehicle speed of 24-31 km/h (15-19 mph), 21% or less throttle being used (refer to Service Information or the Owner's Manual for more details.)



GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.
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© Copyright General Motors Corporation. All Rights Reserved.

March 26.

I found 4 articles from major magazines who say's that this tranny is the worst in recent years and it is even compared with a 1956 Freightliner.

GM staff should start to read magazines such as Car & Driver to find that WE, THE DRIVERS, WE DO HAVE AN ISSUE on this tranny. Like the steering lock-up, GM is hiding this issue.

At this time I'm in contact with GM communication department. My aim is to get the car Buy Back from GM.

If this does'nt work, well there is a special court called PAVAC which is Gorverment managed and financed by all car manufacturers. There is a 7 week limit before getting an audition and an answer.

You represent yourself and it 100% FREE.

So I'm building my case, I'm getting a video done driving and shitting, sorry, shifting that crummy tranny, I accumulating magazine reports which confirms that this tranny is one of the worst, even the worst in recent years, (I have 4 of them so far which I will post soon), and since I work for a major newspaper in Montreal, there are 2 car specialist that will test drive the car and give me there PROFFESSIONNAL evaluation.

My goal: Be the first to have GM to Buy Back, exchange the car, or replace the tranny with a good one.

When I will succeed, and that I'm sure of, well GM will have to back off in it's denial position and get this problem resolved or get those car back in their inventory and die with them.

The magazine text

epinions.com

It doesn't help that the manual shifter is among the worst, maybe even the worst, I've sampled in recent years. It feels like junk, very loose and flimsy. The sound of cheap plastic bits clicking across one another, especially into and out of reverse, deepens the impression that GM didn't work very hard on what they likely saw as a feature with limited appeal. In sharp contrast to the loose feel through neutral, it takes an unusual amount of effort to slide the shifter the last fraction of an inch into a gear. First and second are especially difficult to downshift into.

Car & Driver

Oppressive wind noise, primitive shifter, steering substitutes effort for road feel.


detnews.com


Pontiac coupled it with the new six-speed manual gearbox. The shift action is a little stiff, but the throws are precise, and the engine responds beautifully to the slightest throttle input.

consumorguide.com

Manual-transmission GTP doesn't leap off the line, but steadily builds power, answers throttle eagerly at higher rpm. Manual-transmission shifter has positive engagement, but also a scraping-metal feel during gear changes.

Road & Track February 06

Because the GTP's F40 6-speed manual is a bit stiff past the synchros, and emits an audible clunk on the 2-3 shift, you have to wrestle with the lever more than necessary, a shame because the linkage feels solid, with well-defined gates. A 4-speed automatic, likely the better choice here, is available.


cars.about.com


Because the GTP's F40 6-speed manual is a bit stiff past the synchros, and emits an audible clunk on the 2-3 shift, you have to wrestle with the lever more than necessary, a shame because the linkage feels solid, with well-defined gates. A 4-speed automatic, likely the better choice here, is available.


Because the GTP's F40 6-speed manual is a bit stiff past the synchros, and emits an audible clunk on the 2-3 shift, you have to wrestle with the lever more than necessary, a shame because the linkage feels solid, with well-defined gates. A 4-speed automatic, likely the better choice here, is available.

I must say, my 6 MT does not suffer from any of your stated maladies. It works well. :)

So if you happened to purchase one of the few good tranny, I say:

How lucky you are !


I'd just would like to get your tranny in my car....

So if you happened to purchase one of the few good tranny, I say:

How lucky you are !


I'd just would like to get your tranny in my car.... Also, Nikki has a good 6 MT and her GTP sedan was purchased before my car.

The magazine text that I have accumulated so far


epinions.com

It doesn't help that the manual shifter is among the worst, maybe even the worst, I've sampled in recent years. It feels like junk, very loose and flimsy. The sound of cheap plastic bits clicking across one another, especially into and out of reverse, deepens the impression that GM didn't work very hard on what they likely saw as a feature with limited appeal. In sharp contrast to the loose feel through neutral, it takes an unusual amount of effort to slide the shifter the last fraction of an inch into a gear. First and second are especially difficult to downshift into.

Car & Driver

Oppressive wind noise, primitive shifter, steering substitutes effort for road feel.


detnews.com

Pontiac coupled it with the new six-speed manual gearbox. The shift action is a little stiff, but the throws are precise, and the engine responds beautifully to the slightest throttle input.

consumorguide.com

Manual-transmission GTP doesn't leap off the line, but steadily builds power, answers throttle eagerly at higher rpm. Manual-transmission shifter has positive engagement, but also a scraping-metal feel during gear changes.


Road & Track February 06

Because the GTP's F40 6-speed manual is a bit stiff past the synchros, and emits an audible clunk on the 2-3 shift, you have to wrestle with the lever more than necessary, a shame because the linkage feels solid, with well-defined gates. A 4-speed automatic, likely the better choice here, is available.


cars.about.com

Sadly, driving the G6 GTP became more work than fun. Shifting that 6-speed manual was similar to driving a 1956 Greyhound bus. The brake/accelerator positioning made the heel-and-toe technique, beloved of old racers like me and still part of the fun of manipulating a manual transmission, impossible. So what's the point? If you'd like to own a G6 GTP Coupe I highly recommend the 4-speed automatic version driven by fellow About Cars tester Jason Fogelson. Forget the 6-speed manual; it will only make your life miserable.

Update on articles against GTP 6 speed manual transmission

HOW CAN GM SAY THEY ARE'NT AWARE ABOUT THIS SITUATION.

Can anyone read at GM Tech Labs...?

KANSAS CITY STAR

Pontiac creates a sporty coupe from the G6 platform
Tom Strongman
Contributing editor




Pontiac’s G6 is not merely a replacement for the Grand Am, but a family of vehicles that includes a coupe and a convertible with a retractable hardtop in addition to the four-door.
In keeping with their sporty styling, the coupe and convertible are available in GT and GTP trim. I drove a GTP coupe that had a 240-horsepower V-6, sports suspension and six-speed manual gearbox.
Even though the coupe looks smaller than the sedan because of the steeply sloping roof, it has the same 112.3-inch wheelbase. The coupe also has individual body panels from the windshield back. Chiseled body panels and short front and rear overhangs give it a taut, lean look.
The roofline slopes dramatically from the top of the windshield to the trunk. Smaller adults can fit in the back seat, but they won’t like it if they’re claustrophobic. When I was seated in the back, the roof just barely cleared my head, which was actually under the glass window, not the top. Rear-seat legroom is good, and wide doors and front seats that slide forward facilitate getting in. A small console and cup holder divide the back seat.
Given the low roof, it’s natural to assume that the back seat is best used by kids, pets or briefcases.
The GTP performance package consists of a 3.9-liter V-6 that uses variable valve timing to generate 240 horsepower and 241 pound-feet of torque. This engine is one of a family of new cam-in-block V-6 engines that adjust the orientation of the camshaft to alter intake and exhaust valve timing.
The GTP’s V-6 produces good power across a wide range. Strong acceleration and good midrange throttle response enhance performance. The six-speed manual transmission is the ticket for obtaining maximum performance, but a rough shift linkage spoils its advantage.
A sport suspension is another key component of the GTP package. The G6’s body structure is quite stiff, thanks in part to a cross-car magnesium beam behind the instrument panel, and that translates into a solid ride with tight handling. Cranking 240 horses through the front wheels occasionally causes the front wheels to tug one way or another on hard acceleration.
The variable-assist electric power steering occasionally feels a bit vague, mostly in tight turns.
The GTP’s cabin is sporty without being gaudy. The bucket seats are contoured to give good lateral support. The top of the instrument panel is dark to cut down on glare, while the bottom portion is light to give a feeling of airiness. Handsome gauges have chrome trim rings, white numbers and red needles and glow red at night.
The controls on the center stack are small and chunky, unlike those in many of GM’s newest interiors. Redundant radio controls are mounted on the steering wheel spokes.
Price


MOTORLISTING.COM


This Pontiac sports car offers two different trim levels, the GT and GTP. The GTP trim level features a 3.9-liter V6 engine with variable valve time. The valve timing produces 240 horsepower and 241 foot pounds of torque. Rather unique in its class, the cam is located in the block instead of overhead that is the norm. This feature changes the orientation of the camshaft for maximum intake and exhaust and improves overall fuel efficiency. The engine produces great overall power and mid-level throttle abilities, and the six speed manual transmission only helps these matters. A common complaint among owners has been a sticky shift linkage but Pontiac is said to be working on the issue.


ORLANDO SENTINEL


The test car was the GTP, with a six-speed manual transmission instead of a four-speed automatic. Typically, I like manual transmissions on sporty cars, but not this one: The clutch and shifter felt disappointingly trucklike, not much fun. I think this engine would work well with an automatic, even a four-speed, as GM continues to lag behind in the march toward five-, six- and even seven-speed automatics.
A manual transmission didn't change the cost of the car. It did give the car a boost in fuel mileage, though _ it's EPA-rated 18 mpg in the city, 29 mpg on the highway. Of course, the 303-horsepower, 5.3-liter V-8 Chevrolet Impala SS is EPA-rated at 28 mpg on the highway, so 29 mpg for a V-6 manual isn't exactly a revelation.


ST LOUIS POST-DISPATCH

That manual shifter, a short-throw affair with a nifty leather/chrome shift grip, felt a tad notchy in its 1-2 and 2-3 shifts, but smoothed out with 3-4 and beyond. Also, fuel-saving skip shifts, such as 2-4, 4-6 and even 1-4, are no problem thanks to this gear box’s well-delineated gates.

CONSUMER GUIDE


2006 Pontiac G6: Road Test
Pros Cons
Passenger room
Control layout
Engine noise



Consumer Guide® Road Test Ratings
Acceleration

Base V6 sdn w/ABS, sunroof GT sdn w/leather, panoramic sunroof GTP coupe, man. Class Average
6 6 7 5.6

No opportunity yet to test 4-cyl G6 or convertible. G6s with 201-hp V6 have good acceleration from any speed, helped by smooth automatic transmission that downshifts readily for impressive passing response. Manual-transmission GTP doesn't leap off the line, but steadily builds power, answers throttle eagerly at higher rpm. Manual-transmission shifter has positive engagement, but also a scraping-metal feel during gear changes.


SHOPPING.COM



Transmission/Clutch

Okay, so the GTP isn't going to make coupe buyers swoon with its powerplant alone. But what about the manual-transmission option? That proves that Pontiac's serious about this "sport" thing, right? --Bzzzt!-- Wrong. I really wanted to like this six-speed--GM's first in a car of this ilk--but the fact is, it feels like something Kia might have come up with ten years ago.

To elaborate, the shifter slots loosely into its appointed gates, accompanied by nasty "clackety-clack" noises from underneath the leather gaiter. The shifter hangs up when rushed, too--I botched a few 2-3 upshifts while getting used to the the lever's flimsy feel. And while this may seem like piling on, the GTP's clutch is no gem: long of throw and loose of feel, it takes up waaay at the top of the pedal's considerable travel.

The standard automatic transmission isn't exactly an enthuasiast's choice, either--its four gears are very widely-spaced, so that each upshift drops the engine's revs into a hole. But at least it's a very smooth operator. I'm generally a die-hard manual transmission fan, but in the GTP's case, I think the automatic is the way to go.


Does Pontiac still mean “We build excitement”?
Well, standing still the G6 sure looks a lot more exciting than a Toyota Camry. Out on the road though, the G6 didn’t exactly perform like it looks. Granted, driving it is much more exciting than, let’s say, a Toyota Camry, but the ride was bumpy and a bit boat-like. It performed well out on the open road, and is even rated at 29 mpg highway, but the ride is still very American, and tends to feel larger than the car actually is. The sport suspension could be a tad bit sportier. The stabilitrak stability control still didn’t do much to take care of the torque steer, and the six-speed manual transmission felt loose and a bit clunky.

Another thing, there’s a trick to putting the G6 into reverse that makes it the bane of existence to valets everywhere. You have to lift a ring around the shifter, just so, and then just slide it on up and then push it on into gear. I had to wait 15 minutes in the cold and rain while a valet tried to figure it out;

I sure as hell have the same issues.

Here in Canada we have a Gorverment controlled arbritary ?? court that is free to consumers and paid for by all car manufacturors. It's called CAMVAP.

I filed a complaint on march 31 and I will get a reply from them on wednesday april 5th.

This court guarantees to sit with the arbritator ?? within a 7 weeks limit. The court can decide GM to purchase back the car with a pre-formed formula, and you don't loose much....

I have gathered about 15 articles saying that this tranny is no-good. I will also get a Bailiff to sit in my car while I will drive it with a Camera and Microphone set close to the tranny. The noise will be heared and also all the effort required to shift 2 an 3 gears. The arbritator can also test the car himself at the audition time....

I expect to win this case for the simple fact that FOR ME this was a hidden default when I test-drove the car. The shifter assembly linkage was defective at the time of the road test and it's been changed some weeks afterward, than, and only than I found that the grinding was a different problem which I could'nt have detected at the time of the road-test.

With ths hidden default, the court will have to give me a positive answer and it's decision cannot be brought into a different court after the decision.

So what I have is a mean to get GM to acknowledge that this tranny is defective and if only one of us gets a court order to replace the tranny or buy back the car, than GM will have to cope with that.

So if GM is "intelligent" they will offer to repair or replace the tranny before we get to court. If not then they'll have to take the risk to live with the court decision and get hundreds of claims from other buyers.

So the pressure is on them and I make shure that they are aware that I'm going public with this issue.

G6 don't need bad publicity at this time. And, since I work for a major newspaper, I can go easely public within days after the court decision.

So keep on reading my updates and let's hope that the small guy can beat the Big Manufacturor.

I'm assuming you aren't a write at the newspaper?

Im a Director not a writer, but I've establish relations in the last 28 years working there.

I'v been quiet waiting for some answers from the CAMVAP (www.camvap.com (in Canada)) organization.

On march 31st GM Consumer Service line gave me the offical GM answer: We checked all around, there are no complaints on the 6 speeder ???, your car meets GM specs ??? (eventhough they can't suplly me with any specs, it seems not to exist) and your case is CLOSED.

On the same day I filed my complaint at the CAMVAP (which is some equivalent of the BBB is the US). They said they will contact GM and will give me an answer by April 5.

On april 6, no call. I called back and the CAMVAP rep. (very cooperative) almost drop of her chair when I answered that I did'nt get any news from GM since March 31. She was told that my case is still UNDER STUDY and that I was contacted by GM a few days back (which is'nt true), and since my case is'nt closed at the GM consumer service line (something like that, because I did'nt get any service from them so far) my case CANNOT be brought to the arbritator. My file has to be closed at GM for me to go on....

So I'm in a procedure jam at this point....since on one side GM say's my case is'nt closed and on the other side GM say's to ME that my case is CLOSED ????

Feels like somebody is stalling on me. ??? I wonder why?

Next move: Monday April 10th.

GM agrees to exchange my 6m GTP !

Congrats on winning! Your experience will no doubt help out others. So what's the next car going to be? I'd go for a leftover '05 GTO... :D

There is no GTO in Canada. It's a shame....

After discussing the car exchange this morning, I was told that the car substitution has not been decided because of any transmission problems.

GM did look at my file and since I'm a long time client and that there was a shifter linage problem at the beginning, GM decided to exchange my car so too keep me as a satisfied client.

This is the only reason why this decision has been taken and not because a transmission is faulty.

When I had a discusssion earlier I thought there was something about a faulty tranny, but after today's discussion this was an incorrect interpretation from my part.

So I decided to advise all of you of my faulty interpretation and that GM's decision is not related to a fault in the transmission and not to consider my situation as a common case.

Thanks.

My case is closed.

These forums sure helped.

Thanks All.

I'm glad the issue was resolved to your satisfaction. If I helped in any way, it was my pleasure. ;)