Did the test truck have a t87?
Type: Posts; User: Nathan Turner; Keyword(s):
Did the test truck have a t87?
Did the test truck have a t87?
He did, and when he tested the line pressure...
He did, and when he tested the line pressure after the install it was still at factory setting. Almost like the tcm noticed the high pressure and opened the solenoid.
I have a 2015.5 lml, started having the same...
I have a 2015.5 lml, started having the same issue with it. Iv done quite a bit of research with Allison and GM.It has a T87 tcm witch Chevrolet decided to take over the electronics side of Allison...