Forum Discussion
ktmrfs
Mar 28, 2022Explorer III
FishOnOne wrote:Huntindog wrote:FishOnOne wrote:It would help if they read the owners manual.
The main issue with the Chevy is it didn't downshift until a brake application and then the rpms went up to ~2,500 rpm's like the Ram and it held the speed thereafter.
That is how the GM is designed to work. They may not like it, but it has zero to do with how well it works.
I have absolutely no experience with the current Duramax with the 10 speed Allison, so are you saying you should use the brake pedal to set your speed for the exhaust brake to maintain?
two way to start the exhaust brake on a GM duramax
1) anything over about 2005 set cruise control. when downhill speed gets above the set speed exhaust brake starts working and it if needed it will start downshifting.
2) tap the brakes
I use (1), works great
About Travel Trailer Group
44,056 PostsLatest Activity: Dec 27, 2025