How To: Install A Transmission Cooler - Pontiac G6 Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 06-22-2012, 11:39 PM Thread Starter
OOBER SUPER MEMBER
 
CruisinG6's Avatar
 
Join Date: Jul 2009
Location: Northern Illinois
Posts: 4,053
 
How To: Install A Transmission Cooler

Now this isn't a horrible involved process and just about anyone with a little know-how can do this.
A transmission cooler is a great idea for towing, driving hard, or anything really. It'll vastly increase the life of your transmission. Heat is one of the most common problems resulting in transmission failures.

Also I have the 2.4l LE5 4Cyl engine with the 4 Speed Automatic Transmission (4T45E)
I would assume it's all pretty much the same, but it may vary with the different engines/trannys out there...
And I have the WAMS tuned TCM, but I'm not sure if that's useful info here.

Total Cost: $72.87 After taxes.

What you'll need.
- A transmission cooler kit - Should come with the cooler, Some hose, clamps, and mounting hardware.
- 7mm Wrench, Socket or Bit Driver
- 10mm Wrench, Socket or Bit Driver
- Flathead screwdriver or panel puller
- Knife or blade for cutting hoses
- 2 Vice Grips or clamps to clamp the hoses.
- A flashlight may be useful.
- Jack and Jack Stand(s)
- 2 3/8" Barbed Pipe Fittings That look like this:



Now first thing I did was remove the Radiator cover and the drivers side headlight.

To remove the radiator cover just remove all of the clips holding the top of the bumper on. And then remove the 4 10mm bolts holding on the rest of the cover, Once loose you should be able to just wiggle out of place, A little hard with the hood latch lever being there but it can be managed, it's not too bad.

After removing the cover there is a little rubber air shield sitting on top of the radiator, Simply pull it up, it just fits over a little slot.



And to remove the headlight you'll just need to remove the 2 7mm bolts and then pull out the light as you may have done.



At this point I jacked up the car and set the front drivers side on a jack stand to give me the most room beneath as possible.

Once up you'll need to remove another 7mm bolt and a couple of panel clips to give yourself some work space. You can remove it all if you want, I just puled way enough to reach my hands up in there to get it all done.
The red arrow points to the space where I got in to get to the lines.



Once you get access to the lines you'll need to clamp the hose at both ends and simply cut in the middle, It's a tight spot so be careful not to cut yourself, I got lucky haha. You'll want to install the transmission cooler AFTER the radiator. So the return line coming from the radiator back to the trans is the lower line. Comes from the bottom of the radiator and is the bottom line going back into the trans.
Below is an image where you can see it clamped on the left with the cut following.
This method results in very little fluid loss. Literally a few drops and that's all.
This is a view looking up from the bottom of the car:



I added my barbed fitting to the aftermarket feed line and clamped it. Then connected to other end of the barb into the hose coming from the radiator. I brought it up to where I wanted the cooler mounted and just cut to fit allowing enough room to turn the hose without kinking it. There was plenty to work with.

Now I went with two smaller coolers instead of one larger one, partially for looks and partially for better airflow into the coolers. Plus they're each in front of their own fan. Here's how I set em up:



Once I got it all mocked up I went and ran the return hose, Cut the length to fit and clamped it to the other end of that line.
Here's a finished shot of the hoses clamped:



And here is a view of one of the hoses running beside the radiator to the first cooler:



And finally a view from above after I finally mounted the coolers. I mounted mine to the A/C condenser using the supplied mounting hardware, Which is basically a few zip ties but they don't loop back, they just have a locking piece that goes on the other side of the condenser.



It seems I didn't mount them perfectly straight but it kind of worked out. Makes it visible and somewhat aggressive looking when seen through the grill



When all is said and done you just need to top off the tranny fluid to make up for the coolers taking up that extra volume. On my particular trans I have to have the car in the air and level. Cycle through all the gears and leave it running in park, then remove an overflow bolt and if nothing comes out then add fluid until it just starts to drip out, and then close everything up and that's it.

I checked with an infrared laser thermometer. And just idling I noticed a 10-12 degree drop between my two trans coolers. So it does make a difference but of course while actually driving you get airflow through the coolers and it cools better. Or if the fans kick on...

Hopefully this helps anyone who is interested in adding a transmission cooler!
Let me know of any questions or tips and I'll be happy to accommodate!

NOTE: Be sure NOT to over-tighten the clamps, If you tighten to the point of no return you can compromise the integrity of the trans hose and eventually cause a leak. Be sure to use 3/8" fittings and tighten the clamps just enough, Not so much to skin off rubber from the hose.

Last edited by CruisinG6; 09-26-2012 at 02:13 PM.
CruisinG6 is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 06-22-2012, 11:40 PM Thread Starter
OOBER SUPER MEMBER
 
CruisinG6's Avatar
 
Join Date: Jul 2009
Location: Northern Illinois
Posts: 4,053
 
I drew up some quick diagrams to paint a better picture of Trans fluid flow and cutting the lines and such:

You can tell what is the radiator and trans.
The black lines are steal trans lines
The red lines are stock rubber hoses
And blue indicates fluid flow direction:


And here's it after the cooler install:
Same key as above BUT
The Green is the cooler.
The Brown lines are the after-market hoses.


You can also test the lines, You can start the engine. Put it in drive with the foot on the brake for at least 10 seconds, then back into park and turn it off, and feel both lines. One should be cooler then the other. The cooler one is the one you want to tap into.
You could also remove a line and crank the engine for a second to see which way the fluid flows.

Last edited by CruisinG6; 06-23-2012 at 12:33 AM.
CruisinG6 is offline  
post #3 of 16 (permalink) Old 07-22-2012, 10:51 PM
Moderator Member Thingy
 
Abyssul's Avatar
 
Join Date: Jun 2009
Location: Myrtle Beach, SC
Posts: 1,330
 
Send a message via AIM to Abyssul Send a message via MSN to Abyssul
Does it put any extra strain on the pumps for the transmission fluid?

2006 Pontiac G6 GT

Appearance Mods: AIT front bumper, Black Eagle Eye Halo Projectors with DDM Tuning 5000k HIDs 35w,
GT door decals, painted interior trim, red calipers, de-chromed window trim
Performance Mods: WAMS tune, CRABS, aftermarket sound system

Abyssul is offline  
post #4 of 16 (permalink) Old 07-22-2012, 11:39 PM
Senior Member
 
dustin_ford08's Avatar
 
Join Date: Sep 2008
Location: Houston, Tx
Posts: 156
 
Nice, have you had any problems like leaks and such?

Sent from my HTC_Amaze_4G using AutoGuide.Com Free App
dustin_ford08 is offline  
post #5 of 16 (permalink) Old 07-23-2012, 02:13 PM Thread Starter
OOBER SUPER MEMBER
 
CruisinG6's Avatar
 
Join Date: Jul 2009
Location: Northern Illinois
Posts: 4,053
 
Quote:
Originally Posted by Abyssul View Post
Does it put any extra strain on the pumps for the transmission fluid?
Not that I'm aware of, from what I gather there should be very minimal pressure loss because the type of coolers I used are a single 3/8" tube that passes through the fins. I also dont think there is any extra strain on the pumps because of that.

I've done a lot of research and can't really find any drawbacks. I don't think my trans notices a difference, except in temps! Haha





Quote:
Originally Posted by dustin_ford08 View Post
Nice, have you had any problems like leaks and such?
Nope! Not a single leak. The transmission is working amazingly. The torque converter engages way more smoothly now, so no matter how I start off it feels great. The shifts are all nice and crisp. Under very light throttle it'll shift through the gears so smoothly I don't even notice it. Only reason I know of it is because I watch my RPMs. And under heavy acceleration it runs through the gears amazingly.

And the best part. It ALWAYS works like this. I read somewhere that the dex 6 fluid responds and works really well at cooler temps. And it shows!

Definitely one of my more favorite mods.
CruisinG6 is offline  
post #6 of 16 (permalink) Old 07-24-2012, 01:21 PM
Senior Member
 
Metalhead852's Avatar
 
Join Date: Aug 2010
Location: Lima, OH
Age: 31
Posts: 163
 
Operating temp differences?

Lima... where the men outnumber the women and the women outweigh the men.
Metalhead852 is offline  
post #7 of 16 (permalink) Old 07-24-2012, 05:30 PM Thread Starter
OOBER SUPER MEMBER
 
CruisinG6's Avatar
 
Join Date: Jul 2009
Location: Northern Illinois
Posts: 4,053
 
I unfortunately can't give exact figures. My obd reader can't pick up trans temp from the pcm. But I did check the coolers with a laser thermometer and saw a 15 degree drop from one cooler to the other just with the car idling in the driveway.
CruisinG6 is offline  
post #8 of 16 (permalink) Old 07-24-2012, 10:35 PM
Senior Member
 
dustin_ford08's Avatar
 
Join Date: Sep 2008
Location: Houston, Tx
Posts: 156
 
Where did you get the coolers from?

Sent from my HTC_Amaze_4G using AutoGuide.Com Free App
dustin_ford08 is offline  
post #9 of 16 (permalink) Old 07-25-2012, 12:05 PM Thread Starter
OOBER SUPER MEMBER
 
CruisinG6's Avatar
 
Join Date: Jul 2009
Location: Northern Illinois
Posts: 4,053
 
Napa, Only place that had them in stock so I could actually see what I'm buying. At least around me...
CruisinG6 is offline  
post #10 of 16 (permalink) Old 07-27-2012, 12:24 PM
Senior Member
 
dustin_ford08's Avatar
 
Join Date: Sep 2008
Location: Houston, Tx
Posts: 156
 
Would you happen to have the part number for those bad boys?

Sent from my HTC_Amaze_4G using AutoGuide.Com Free App
dustin_ford08 is offline  
post #11 of 16 (permalink) Old 07-28-2012, 11:56 PM Thread Starter
OOBER SUPER MEMBER
 
CruisinG6's Avatar
 
Join Date: Jul 2009
Location: Northern Illinois
Posts: 4,053
 
I don't unfortunately. I checked my receipt. Wasn't on there. Checked the website and can't even find a trans cooler that's the same dimensions as mine. I've been to napa since and they replaced the area with different merchandise. So my guess is what I got is either discontinued or replaced with something that's slightly different in size or something.

I'd recommend just going to an auto parts store and actually taking a look at the coolers you want to buy. You can get an idea for the size you want to run or see if something looks more appealing or seems better suited for you.

I'd also say pull that plastic radiator cover. There's plenty of room but I found it helps to see just how much you really have to work with.
CruisinG6 is offline  
post #12 of 16 (permalink) Old 07-30-2012, 11:56 AM
Senior Member
 
dustin_ford08's Avatar
 
Join Date: Sep 2008
Location: Houston, Tx
Posts: 156
 
I'll see what I can find. Thanks for your help! I took that cover off when I replaced the ac compressor so no worries there lol

Sent from my HTC_Amaze_4G using AutoGuide.Com Free App
dustin_ford08 is offline  
post #13 of 16 (permalink) Old 07-30-2012, 12:14 PM Thread Starter
OOBER SUPER MEMBER
 
CruisinG6's Avatar
 
Join Date: Jul 2009
Location: Northern Illinois
Posts: 4,053
 
Nice, I figured out that I used two "Light Duty" Transmission coolers, From what I've read online one light duty should be plenty for our cars, But I figure two wouldn't be too bad and I'm also thinking about the long term, since I have plans for my motor
CruisinG6 is offline  
post #14 of 16 (permalink) Old 01-12-2013, 04:17 PM
Junior Member
 
snakeeater77's Avatar
 
Join Date: Mar 2012
Location: MI
Posts: 24
 
Installed a B&M cooler today. Too easy on the GXP.
Didn't have to jack the car up or anything.
snakeeater77 is offline  
post #15 of 16 (permalink) Old 06-30-2013, 10:51 AM
Member
 
Join Date: Jun 2013
Location: Vancouver, BC
Posts: 37
 
To the OP. I'm just curious as to why you picked in series with the stock oil cooler through the rad, instead of full flow (just going from cooler lines straight to your external coolers).


Sent from AutoGuide.com App
bsb2001ca is offline  
Sponsored Links
Advertisement
 
Reply

  Pontiac G6 Forum > Technical Discussion & Modifications > HOW-TO

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac G6 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
3.9L gtp transmission??? jessica06gtp General Maintenance 3 03-10-2012 09:36 PM
Transmission Help! kawierider1990 Problems and Solutions 13 09-20-2011 10:31 PM
transmission replaced and still same transmission problem Sterling Problems and Solutions 7 09-20-2011 03:53 PM
MTX REQ install help. WisNinerFan Car Audio, Video and Security 7 07-05-2011 12:20 PM
Transmission? wildkyle90 G6 GXP Discussion 3 02-18-2010 06:24 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome