NEED HELP Shift lights

[Dave 26]

Hey Guys
I just had a rebuild on my 2008 TB transmission 145k miles. When I picked it up. Drive seemed fine but , when putting in 1,2,3 the indicator lights were out of sync. Brought it back , they replaced the N safety switch . Ok things were in sync. But 1st had a weird chug to it . While waiting to get back to the shop . I was driving on highway went to pass and the rpms revved to 6500 while i was only doing 60. Then it started slipping while 30-50 mph range , Back to shop guy says trans is toast, Ok they put another rebuilt in it. Now it drives normal in D , but again moving shifter to 1,2,3 D. the indicator light is out of sync.. Shop says we dont know ..

 

[Mooseman]

There's obviously something with the neutral/PRNDL switch assembly. You or the shop would need a scan tool capable of reading what the TCM/PCM is seeing from it. Shop sounds pretty sketchy to me.

 

[Dave 26]

Thanks
Im going back tomorrow, Its a shop .All they do is trans.

 

[TequilaWarrior]

Thanks
Im going back tomorrow, Its a shop .All they do is trans.

Unfortunately, that doesn't mean they do all of them well.
This is a platform that hasn't been in production for 14 years. Further, there are plenty of examples of idiosyncrasies this platform has that many shops just don't know how to handle today.

 

[Dave 26]

Also when manually shift into 1. it still hesitates like slipping .

 

[Mooseman]

Could be caused by a discrepancy between the internal mechanical valve and the PRNDL switch.