GMC Suburban 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your GMC Suburban 2500
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GMC Suburban 2500 ProblemsEngine Misfire Due to Worn Valve Seat
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.
A Loose or worn gas cap may cause Check Engine Light to illuminate.
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.
GMC Suburban 2500 Questionsstart but will not run long (1 answer)
truck had been starting &running ;set for two weeks.will start and then shut off.
checked;fuel pump/prusser ;all electric to injects all OK; spray starter fluid [will run as long as you spray]
start up run 15 or 20 sec. then shut off. does carb. have pump in it
Starter died trying to start with dead fuelpump, both are replaced starter switch is good, new starter+pump work. But it still won't get fuel, maybe the fuel sending unit? I keep hearing people suggest the distributor, but it just had a tune-up and ran buetifuly
All the time.