Pontiac G6 Forum banner

1 - 12 of 12 Posts

·
Registered
Joined
·
4 Posts
Discussion Starter #1
My wife recently bought a 2005 Pontiac G6 about a month ago. Everything was working fine until a few weeks ago when the rear brake lights / turn lamps stopped working. The turn indicator inside the dash 'clicked' rapidly, indicating a malfunction of some sort. Replacing the bulb that did not look burned out to begin with did not fix the problem.

I researched the internet and this site gave me the clue as to where to look: I removed the rear light bank by removing the two nuts inside the trunk (grrrrrrrrr) and detached the cable connector. I checked the voltages on the body side of the connector and all the voltages were present for the driving, turn indicator and brake lights. I then cleaned (lightly scraped) the connections in the connector male and female ends (4 of them), re-attached them and reversed the removal. All is well now - the rear brake, turn and driving lights all work without failure. 100% fix.

I suspected corrosion in that connector since the lens assembly is NOT weatherproofed and there was moisture inside the lens assembly. Also, GM assembly has had other issues with terminal corrosion. I could not see any serious seal between the lens assembly and the body.

Pontiac engineering at it's best I guess.

I hope this saves some of you $$$ that the dealers are always ready to relieve you of while gue$$ing as to what the problem really is.
 

·
Mobile Audio Specialist
Joined
·
396 Posts
My wife recently bought a 2005 Pontiac G6 about a month ago. Everything was working fine until a few weeks ago when the rear brake lights / turn lamps stopped working. The turn indicator inside the dash 'clicked' rapidly, indicating a malfunction of some sort. Replacing the bulb that did not look burned out to begin with did not fix the problem.

I researched the internet and this site gave me the clue as to where to look: I removed the rear light bank by removing the two nuts inside the trunk (grrrrrrrrr) and detached the cable connector. I checked the voltages on the body side of the connector and all the voltages were present for the driving, turn indicator and brake lights. I then cleaned (lightly scraped) the connections in the connector male and female ends (4 of them), re-attached them and reversed the removal. All is well now - the rear brake, turn and driving lights all work without failure. 100% fix.

I suspected corrosion in that connector since the lens assembly is NOT weatherproofed and there was moisture inside the lens assembly. Also, GM assembly has had other issues with terminal corrosion. I could not see any serious seal between the lens assembly and the body.

Pontiac engineering at it's best I guess.

I hope this saves some of you $$$ that the dealers are always ready to relieve you of while gue$ as to what the problem really is.
After you ''Cleaned'' the contacts did you apply ''terminal/Dielectric grease''?
 

·
Registered
Joined
·
4 Posts
Discussion Starter #3
quote=mjgonegm;40924]After you ''Cleaned'' the contacts did you apply ''terminal/Dielectric grease''?[/quote]

Umm, no... wife was just leaving for a trip to the GTA and I was 'fixing it'... after 2 weeks of her asking me to figure out what it was and fix it. :axechase:

No doubt I will buy and apply the stuff when it's time to change a bulb or the same problem occurs... why do today what you can put off until tomorrow?
 

·
Mobile Audio Specialist
Joined
·
396 Posts
After you ''Cleaned'' the contacts did you apply ''terminal/Dielectric grease''?
Umm, no... wife was just leaving for a trip to the GTA and I was 'fixing it'... after 2 weeks of her asking me to figure out what it was and fix it. :axechase:

No doubt I will buy and apply the stuff when it's time to change a bulb or the same problem occurs... why do today what you can put off until tomorrow?
LOL.....

Six weeks later.....

(Insert name here), God dammit it's doing it again FIX it!!!! (insert name here)
 

·
Registered
Joined
·
195 Posts
check the fuse for the stop lamps. that's probably the problem. and applying terminal/dielectric grease won't do much in this case. the car is new or newish so there's no way the contacts are corroded.

there's 3 fuse boxes on the car. 2 that you will see. 3rd is hidden under the dash board and you don't need it. im not sure where the fuse for the stop lamp is. it's probably under the hood. take off the battery cover and the fuse box will be right next to the battery. and there's also one in the trunk on the left. there's a small window that you can open and there are a few fuses in there too. look on the fuse box cover to find out which fuse is the stop lamp.

i'm 99% certain it's the fuse
 

·
Mobile Audio Specialist
Joined
·
396 Posts
check the fuse for the stop lamps. that's probably the problem. and applying terminal/dielectric grease won't do much in this case. the car is new or newish so there's no way the contacts are corroded.

there's 3 fuse boxes on the car. 2 that you will see. 3rd is hidden under the dash board and you don't need it. im not sure where the fuse for the stop lamp is. it's probably under the hood. take off the battery cover and the fuse box will be right next to the battery. and there's also one in the trunk on the left. there's a small window that you can open and there are a few fuses in there too. look on the fuse box cover to find out which fuse is the stop lamp.

i'm 99% certain it's the fuse
4 Words
Ontario, Canada, snow, road salt
 

·
Registered
Joined
·
195 Posts
4 Words
Ontario, Canada, snow, road salt
it can be as many words as you like - it doesn't make you right ... do you even know where the connectors to the tail lamps are? they are under the rear bumper first of all. second of all there are rubber seals in them to prevent moisture and all kinds of crap from getting in.

and the chance of both of them getting corroded at the same time are minimal. and i say it's a fuse because i'm pretty sure left and right share the same fuse.
 

·
Mobile Audio Specialist
Joined
·
396 Posts
it can be as many words as you like - it doesn't make you right ... do you even know where the connectors to the tail lamps are? they are under the rear bumper first of all. second of all there are rubber seals in them to prevent moisture and all kinds of crap from getting in.

and the chance of both of them getting corroded at the same time are minimal. and i say it's a fuse because I'm pretty sure left and right share the same fuse.
Yes I do..... If you ever have taking you taillights off after a snow storm or had them off period you will No how they could get corroded, Snow,water,moisture can get up there, the chances of doing severe damage? not likely but if the rubber seal around the housing and bulbs is cheap,crappy, or falling it can happen. Also ANYTIME you change a bulb or add a fuse you should add dielectric grease It not only provides a better contact and lower resistance it also insures you don't have to pry the bulb or fuse out in the future. And I didn't say u were wrong either...
 

·
Registered
Joined
·
606 Posts
There has been a lot of connector corrosion. For environmental reasons the government has stopped the manufactures from plating the connectors, great uh.
 

·
Registered
Joined
·
4 Posts
Discussion Starter #10
OK, we're wandering off subject here...

daygon: It is not the fuse(s): if you re-read my post you'll see first of all that 2 of the 4 lights were inoperative. What are the chances of 2 fuses all blowing at exactly the same time?

Also, you'll see in my original post that I said I checked for 3 of the 4 voltages at the connector, which, by the way, hangs from the body on a 2005. I checked the fourth since I was there anyways... all 4 voltages were present: driving, back-up, turning and brake (when switched). This means that all fuses were working.

Also, I did check the fuse block in the trunk compartment (first): not an easy thing to get to and it's awkward to read the fuse location (more famous Pontiac engineering). No blown fuses.

Also, you'll see in my original post that I saw moisture on the connector when I removed the tailight module. It doesn't matter how theoretically sealed the assembly might appear, there was moisture: bad engineering. When re-installing the tailight assembly I noticed that there was not a good seal between the tailight contour and the body and that the flimsy seal provided could not adjust for the contour differences: hence potential, and in my case: moisture!

Finally, the problem is fixed! Looks like it was not the fuses at all and it was indeed terminal corrosion at the connector.

mjgonegm: LOL.....

Six weeks later.....

(Insert name here), God dammit it's doing it again FIX it!!!! (insert name here)


It's my time to waste. I've so had it with GM and their 'point-the-finger charge-the-buyer to fix their mistakes' mentality! The bigger concern is the power steering pump and that recall! Actually I freaked when my wife said that the salesman had sold her f***ing GM that I was fit to be tied, but nnoooooooooo... she had to have it her way! Guess who ends up freezing his a** off in minus 15 C with wind chill fixing some stupid 10 cent half-a**ed design failure made by the GM/Pontiac money group! Looks like they've finally done themselves in, along with Chrysler and their half-a**ed engineering and warrantly bullsh*t! They just stick it to their very own dealers to fix their problems anyways.

I only made this post because i could not find anywhere on the internet on how to fix the light(s) problem without shelling out $$$$$ to a dealer somewhere to guess as to what the real problem is and spend all that time doing so.

***************************************************************

I should have simplified it and summed it up as:

Rear turn/driving/brake/back-up light(s) some or all not working on your Pontiac 2005 G6?: Check the fuses, if they're OK then PULL THE LIGHT ASSEMBLY AND CLEAN THE CONNECTIONS.

***************************************************************

OR: clean the connections, go drive somewhere, use gas, spend money and buy di-electric grease, apply and re-assemble.

AND/OR: or spend time, call GM and see if your vehicle is part of their recall for this problem and go spend time and gas for a dealer somewhere to fit you in to fix it, during your working hours usually.
 

·
Registered
Joined
·
17 Posts
Possible Recall Alert

Look into your model numbers. There was a RECALL on a bunch of 2005 G6 models having this problem. check it out with a GM dealer right away!:)
 

·
Registered
Joined
·
17 Posts
GM put out a RECALL warning for a bunch of 2005 pontiac G6`s. I would look into seeing if yours is on that list. My recomendation is that you take your car into a dealer right away and see if its one of them. They have to fix it.
 
1 - 12 of 12 Posts
Top