Trans over temp issue

[mattjones]

What were the conditions when the temperature reached 200? Towing, temp outside?

You can see my normal temps in the photos above. Yesterday it was 96 degrees outside and the transmission and transfer case temps were at 156 while running 73 mph on the highway and 167 in city driving afterwards on the way to grandma's house. Pretty normal for us. Truck weighed about 7,200 pounds on that run.

See post #290 here:

https://www.tahoeyukonforum.com/threads/useless-information.97483/page-29

I believe I was on a road trip when I noticed the temp. I wasn’t towing anything but from what I remember the temps were in the 90s and I was probably averaging about 70mph on the highway, sustained for about 3-4 hours of driving.

I’ll be sure to keep an eye on that transmission temp in the future. I only noticed it because I was checking my fuel economy for the trip and cycling through the DIC display options.

 

[swathdiver]

Seems unusual to be this warm and not get a light.

Nope, they are made to take a lot more heat. The first high temperature warnings don't come on until the high 260s. Check out that link for info from the shop manual.

 

[89Suburban]

Good deal Jeremy! If I remember right, yours has 3.08 gears and you were planning to tow with it right?

Here's a few shots of my temps, to give you an idea of what to expect, cruising down and then up the highway with a good sized load in the truck and not towing:

View attachment 225935 View attachment 225936

Show off.

 

[intheburbs]