1993 GMC Rally Wagon 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 GMC Rally Wagon 2500
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1993 GMC Rally Wagon 2500 ProblemsFlush brake fluid every 60,000 miles
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.