A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.
Resources for the Repair and Maintenance of your 1990 GMC Vandura 1500
1990 GMC Vandura 1500
1990 GMC Vandura 1500 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.
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.
The alternator may fail causing the battery to go dead. The charge light on the dash may or may not illuminate. The alternator may also develop an abnormal noise. A failed alternator will require replacement.
An oil leak may develop from the distributor o-ring seal requiring replacement of the seal.
1990 GMC Vandura 1500 Questions and Answers
How do you install a netraul safety switch on a 88-91 gmc van
i have a gmc van 1989 it idles fast put in plug wires tps and map sencer and it steel idles around 2000 rpm
My Vandura runs perfectly when first started running in Open Loop and doesn't miss at idle or at high RPM. Once the van reaches operating temp and goes into closed loop, it hesitates and back...
We keep replacing the battery but none of them have held a charge. The auto shop says there's nothing wrong but we have to charge the battery if we want to use it. Sometimes we can be somewh...
Would all the coolant drain out from the bottom of the radiator?.