GMC Vandura 2500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your GMC Vandura 2500

GMC Vandura 2500 Problems

Intake 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.

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.

Distributor Shaft O-Ring Seal May Leak Oil

An oil leak may develop from the distributor o-ring seal requiring replacement of the seal.

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GMC Vandura 2500 Questions

Car parked for three years. Very low mileage. New fuel pump. I can hear it running, no gas to fuel filter (1 answer)

Have not been able to start.

Battery trouble?? (1 answer)

Hello, i'm working in a ski resort for the winter. So my van did not move since the beginning of december. I didn't disconnect the battery so it's flat. But i'm charging it this 2 days and i am still not able to start the van. While it's charging the hazard light are flashing ...

Why doesn't my passenger rear wheel drive? (2 answers)

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GMC Vandura 2500 Reviews

should timeing marks on a timeing chain be pointing at each other or in a straight line up
just bragging ,,,just hit 330,000 miles. regular maintence and wear . hope we hit half million mark !!
Bought it in Reno, Nevada and drove it up to Alaska 2 weeks ago. Awesome vehicle with a smooth ride, smooth transmission, strong but quiet engine, and pretty good gas mileage! Will keep it for a long time! JH

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