Owen Thurber

The plugs needed to be replaced anyway. the wires are also in bad condition too so ill be replacing those too

I think its an ignition problem because it started misfiring on the way home today and all i can smell is unburnt fuel. Ill replace the plugs and see if that fixes it. the other theory i have is the PCM is going bad. the stabilitrack and traction control were acting weird today too. Thanks for the help!

Hey y'all I have been trying to find an answer to this online and I cant find one so I figure I would ask here. I drive a 2007 Silverado 1500 4x4 and recently it has started popping in high rpms. If I roll onto the throttle it doesn't pop but if I give it gas fast it pops. A check engine light with the code p0451 also came on around the same time as the problem started. it will pop anywhere over 3k rpm. A friend told me it could be spark plugs, or that it could be running lean. Anyone else have this problem? Thanks