1990 GMC 1500 Pickup Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1990 GMC 1500 Pickup

1990 GMC 1500 Pickup Problems

The inside and outside door handles are prone to breaking.

The windshield wipers may not work intermittently due to a faulty wiper motor control board. Our technicians tell us that lightly taping on the wiper motor when the fault occurs should temporarily get the wipers working again. Some vehicles were recalled for this problem and some were not. You will need to check with your local dealer to find out if a specific vehicle was included.

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.

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1990 GMC 1500 Pickup Questions

The trucks not getting fuel.

Would it cause the truck(an automatic) to shift late? A super rich smell? An injector not to spray?

It cranks and acts like its going to start but wont. It is getting spark. The fuel injectors are not simultaneous. One will spray and then the other one....back and forth. Is it the fuel control module or coil? I think the distributor cap and spark plugs are good but not 100% sure.

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