Forum Discussion
Lantley
Mar 31, 2023Nomad
Turtle n Peeps wrote:Lantley wrote:
I'm not suggesting the OP has a problem with their truck. But I can attest to my 07 LBZ Duramax overheating due to excessive revving on steep declines. Is a 2007 a modern truck?
The exhaust brake was aftermarket which may have been the root of the problem. Nevertheless the tranny would and did overheat if you let it.
Any modern diesel truck or gas truck for that matter, cuts all fuel off to the injectors while going down hill. There is no heat being made because there is no combustion going on. This has been going on since 1994.......at least for GM.
That all sounds good, I don't dispute your claim. But that 2007 truck would definitely overheat if you let it. I managed to control the overheating by not letting the truck rev as much on steep declines.
Again it had an after market exhaust brake that could had been faulty and ultimately caused the problem.
My 2019 has a factory exhaust brake and does not have that issue.
About Travel Trailer Group
44,028 PostsLatest Activity: Apr 08, 2025