GMC 1500 Pickup Problem Report
GMC 1500 Pickup Engine 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.
check engine light won't go out. Po300 and PO306. Engine runs smooth. Did full tune up-cap, rotor, plugs, wires, even replaced 02 sensor and all fuel injectors. Code still on but truck runs fine - Visitor
Do you have to pull the engine to replace the oil pump in a two wheel drive truck?
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The intake manifold gasket may develop and external engine oil or coolant leak. In some cases,...
I have also noticed and am unsure of the rear axle if u step on the brake and hit yhe gas the p...