1996 GMC Rally Wagon 3500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1996 GMC Rally Wagon 3500
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1996 GMC Rally Wagon 3500 ProblemsCheck Engine Light Due to Loose or Worn Gas Cap
A loose or worn gas cap could be cause the Check Engine Light to illuminate.
The engine may develop a misfire due to worn valve seats. This fault will cause the Check Engine Light to illuminate. Our technicians tell us the misfire may or may not be felt while driving. They further recommend that both cylinder heads be removed and thoroughly inspected and repaired as necessary.
One or more fuel injectors may become stuck closed causing an engine misfire and the Check Engine Light to illuminate. Our technicians tell us that this problem can be caused by some fuel additives. There are special procedures which may be able to restore the affected injector. If this fails the affected injector must be replaced.