1993 GMC Vandura 3500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1993 GMC Vandura 3500

1993 GMC Vandura 3500 Problems

Transmission 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.

Idling Problems Due to Vacuum Leak in Throttle Body Gasket

An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.

Internal Faults in Distributor Can Cause Engine Problems

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.

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1993 GMC Vandura 3500 Questions

My heater whent out on 93 vandura 3500 (2 answers)

Just stop working after it over heated

No heat (1 answer)

It appears that there are adjustments on the heater hose under the hood. How do you adjust to get heat?

what would cause my transmission to shift sometime and not at other time? (2 answers)

my transmission shift sometime rough and other time it will not get out of second gear.

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