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.
Average mileage: 103,000 (39,000–179,000)
Engines affected: 5.7L V8, Gasoline
16 people reported this problem
Viewing 1 - 4 of 4 comments
Hard shift from 1-2. Feels like transmission slipping. Rough idle when coming to a stop or sitting. We changed spark plugs, wires check codes p0307 came up. Think it might be a fuel injector.
Needs to be fixed I'm at 44400 miles. Kicks when changing to 2nd gear. Cyl 6 not firing need help Please
Misfire code twice P0307 once at cylinder 6 and once cylinder 7 reset code new plugs and wires. Experience sluggish performance once in awhile cannot determine if Vortec is going or fuel pump is going or fuel pump relay is going, maybe fuel filter? rear differential also appears to be slowly going out now.
Missing, Replaced multiport Fuel injection modual.