quote:
GM, the problem with that particular vehicle is that the bumper cover blocks the airflow from going across the fins on the trans cooler. I have an 08 EXT AWD and while the motor was as strong as acid, towing any kind of load in the summer raised the hell out of the trans temp. I will say, too that the stock gauges have improved dramatically and are fairly accurate. The OP's vehicle has almost the same bumper cover as the Cadillac, I would expect the same problem.

Interesting, same with the tahoes?

I hope to get my diesel by next season though.

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Posted by greasemonkey

Macclenny Fl aka south JAWJA

Member since Aug 2012

2773 posts

Posted on 8/14/13 at 6:29 pm to NYCAuburn

If they have the six-speed Alison its not as critical but with the 4l60e and pulling a load very far I would definitely put a good cooler and good fluid.

Most people never service there transmission until I notice a problem and then it's too late and it makes it worse.
I do mine every 50,000 miles and use high-quality synthetic fluid. my Tahoe has 300,000 miles on the original tranny and motor

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Posted by VetteGuy

Member since Feb 2008

28710 posts

Posted on 8/14/13 at 6:30 pm to NYCAuburn

quote:
Interesting, same with the tahoes?

It could be.

I bought it from new and it would get to 220+ when towing 3-4K in the summer. This was on level interstate. The truck also came equipped with the towing package (receiver and trans cooler).

Once I looked at how the air flowed, I figured it out.

I also figured out it wasn't gonna make a good tow vehicle unless I modded the trans cooler.

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