1993 GMC Vandura 3500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 GMC Vandura 3500
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1993 GMC Vandura 3500 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 distributor may develop internal faults. This can cause a rough running engine or stalling condition, the Check Engine Light may or may not illuminate. Our technicians tell us that the distributor should be overhauled or replaced to correct this concern.
1993 GMC Vandura 3500 QuestionsMy heater whent out on 93 vandura 3500 (2 answers)
Just stop working after it over heated
It appears that there are adjustments on the heater hose under the hood. How do you adjust to get heat?
my transmission shift sometime rough and other time it will not get out of second gear.