1993 GMC Vandura 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1993 GMC Vandura 2500
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1993 GMC Vandura 2500 ProblemsIntake Manifold Gaskets May Leak Coolant or Engine Oil
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.
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.
1993 GMC Vandura 2500 QuestionsWhen the fuel injection goes bad what are the symptoms ? (2 answers)
I think it should be lower 12 or 14 amps.It may have ruined the relay and control also