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.
Car Problem Reports
GMC Savana 2500 Check Engine Light and Misfire Due to Stuck Fuel Injectors
GMC Savana 2500 Problem
Engines Affected: 5.3L V8, 5.7L V8
Average Mileage: 117,003 mi (78,000 mi - 193,011 mi)
Visitor, 2003 GMC Savana 2500, 5.3L V8, 78,000 mi
Same as the others. Haven't found the solution yet.