Originally Posted by spock123
I had a 08 2500 diesel and no exhaust brake but you could set the cruise and put truck in tow/haul and truck would act like it had a exhaust brake. As a matter of fact you can do the same with a 2500 gas burner and I think with a 1500, Silverado of course
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A 6.0 gas vortec in a 2500 is not going to act like it has an exhaust brake. Doesn't matter if it's In tow haul, with cruise set, however you set it unless you have a turbo added
The motor will no get compression braking from the exhaust. The tranny will down shift, and the 6 speed does it better than the old 4 speed but it just revs higher. I would not call it "braking". The 6.2 and 5.3 won't either.
In 08 the diesels did have VGT's on the turbos hence the cruise function acting like a modern exhaust brake and you could even have customs tunes that gave you exhaust braking.
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