1991 Chevrolet G Series Van (G20) Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Chevrolet G Series Van (G20)
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1991 Chevrolet G Series Van (G20) ProblemsTransmission Fluid Leak, Erratic Shifting
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.
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.
The alternator may fail causing the battery to go dead. The charge light on the dash may or may not illuminate. The alternator may also develop an abnormal noise. A failed alternator will require replacement.
1991 Chevrolet G Series Van (G20) QuestionsMy van will go into drive & reverse just fine, it won't shift into 2nd or 3rd (1 answer)
What could the problem be?
I was charging an iceless cooler and the charger to the cooler was hot when I unplugged it after the radio stopped
It acts like it just loses all power.