Transmission Fluid Leak, Erratic Shifting on GMC G2500
Problem overview
On the 4L80-E Transmission (Diesel and 7.4L gas 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.
6 people reported this problem
1 commentGMC G2500 vehicles with this problem
3 model years affected
Average mileage: 108,000 miles
(108,000 - 108,000)
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