Hey there all just a heads up.
I work in the extreme North of Alberta Canada, and today (at -43 degrees celius) The tranny was so hot I could hear the oil boiling, at least that is what I thought it was, it sounded like popcorn popping in my tranny pan.
I noticed a terrible smell when I would stop, and when I would put into reverse or drive it would take about 10 seconds to engae. I checked the tranny temp on the dash center and it read 65 degrees.
After shutting off the truck, I pulled the dip stick and sure enough pitch black and smelt like burnt brakes, great now what; I am in the middle of no where, the truck has thrown no codes yet, but I know the tranny is dam near done. I left the hood open and faced the truck into the wind hoping it would cool down the tranny enough that I could get back to my base camp 2 hours a way. after about 30 minute I started the ruck and watched the tranny temp gauge jump from 65 degrees to 120 degress then started to cool down and settle in at around 85 - 90.
The only thing I can think of now is a faulty tranny temp sensor, unfortunatly the damage is done now, I am sure the bands are shot, and the pump, and valves are fried, I only have 10,000KMS on this truck so lets hope the dealer can get this fixed when I come in for Christmas.
Any other thoughts from the 4th Gen gurus would be welcome.

 

Thoroughly photograph and document EVERYTHING. Other than that, no insightful thoughts.

 

^x2,
Limit your driving to getting home and get it in to the dealership. Note the milage when the problem began.

 

Two words "lifetime warranty". Sucks you have to deal with it so early, but thank god for the warranty, ehh!

 

least your tranny warms up. when i was up around rainbow lake northern alberta it was about -53 and i couldnt even get the tranny temp up. im sure thats probably no good for the tranny either. least you got warranty.

 

hey ****ty to hear I am in alberta as well -47 with the windchill today hope I don't experience what you did

 

Just a heads up to all working in the extreme cold.
If your tranny temp is sitting between 40 & 50 degrees, and your tranny cooler fan is kicking in, Stop driving your truck. This is what happened to me, I keep my info center on the tranny temp at ALL times now to keep an eye on it, it sits right around 90 degrees when working properly.
I still have the check engine light on the dash, but no messages, so I'll have to wait until I get back to Red Deer to get them to read the code and go through the tranny for repairs.
Good luck and stay warm.

 

Now you have me worried. I've never looked at my tranny guage unless I was towing. This morning it was 6F outside and the tranny stayed at <104 reading for my entire trip to work (20 miles). Seems odd that it never came up into the normal temp range over that distance, and it gets down into the -20's (F) here in Jan

 

Compliments to all responders, this off beat topic is important.

It brings up two questions:

a) Is it better to monitor oil or coolant temperature?
b) What do YOU think are "normal" temperatures?

(I assume all temps in the above posts are centigrade, no F...)

 

good to know, im in brooks ab, just picked up my '10 yesterday hopefully this is just a single occurance not a widespread problem.