Has anyone ever changed an engine harness?
I'm faced with a nasty problem.
My G6 GT convertible (3.9L) has eaten 2 transmissions in 70K miles (35K each) with gentle driving.
The problem: When starting to roll from a stop the car hesitates, then there is a bang, a feeling like you were hit from behind, and the car then rolls normally. Do this enough times and the front input clutch explodes. Completely random although more common when the car is cold and load is light. Sometimes 2x a day, other times I can go for 2-3 weeks and it doesn't happen.
First transmission replaced by GM. Second by an independent shop.
Changed parts include ECU, TCU, shift solenoids, EPC solenoid, valve body, TPS sensor.
The independent transmission shop has given up, blaming the car for destroying the 2 transmissions.
They are probably right.
I really find it hard to sell/junk a car with 70K miles in otherwise perfect shape.
So I suspect the only thing left is to replace the wiring harness. They are still available new (surprised me!) but I'm not sure that I can do this with the engine in the car.
Has anyone tried one? Or have any advice?
Thank you in advance!
2007 G6 GT Convertible