For the 4L80-E Transmission only (Diesel engine), Transmission fluid may leak through the electrical connector on the side of the transmission, damaging the wire harness and causing the transmission to shift erratically. Our technicians tell us there are updated shift solenoids, an internal transmission harness, and a connector pigtail available to correct this fault.
Car problem reports
Problem with your car? See what our experts say or submit your own.
Repairpal verified GMC Jimmy problems
Ask a Question
More about this car