GM 6.0 gear searching.....
Help?? While this may have been covered to some extent on this forum or another, I'm looking for suggestions for my 2012 Suburban 2500 with the 6.0l engine. Towing my boat(04 Nautique) it's awes...
Forum Discussion
BurbMan wrote:
Intheburbs, the caption on your pic should be "Last pic I took before the trans blew."
Well, the first time I had the trans approaching 240° was our trip to the Grand Canyon/Utah/Colorado, and that was 4 years and 50,000 miles ago. Still the original transmission, still shifts perfectly.
My motto is, "Know your equipment." A close friend of mine is a transmission validation engineer at GM. He spends most of his time at the Milford proving grounds, has his license for driving there, and gets to do some pretty cool stuff with some great cars and trucks. His first job/project at GM was validating the 6L80/6L90 transmissions. I asked him about my plans and the temperatures I was seeing, and he assured me they did much worse in validation.
Granted, my experience is a data point of exactly one, but most of the components on the 2500 Burb, as you probably already know, are total overkill for the application.
And, unlike your '01 that uses Dex 3, the Dex 6 in the GMT900 trucks is a substantial improvement and can take some serious heat. The "trans hot, idle engine" warning only comes on at 265°. I also change out the fluid religiously.
