Please help... I just bought a used G6 GT 3.5 about a week ago with 43,000 miles. It ran good for about a week. Now acceleration is sluggish, hesitatant (jerky), the check engine light flashes and then goes to solid accompanied by the traction control light going on and off (and Service Traction message on the radio display). The problem is worse when I start from a stop (although I have encountered it all speeds). If I press moderately or hard on the gas, the problem appears right away.
Bought an OBD II code reader... I am getting a P301 Cylinder 1 misfire (no other codes are showing up). This is happening when I accelerate. Does anybody have any ideas as to what I should look into or check further?
having the same issue with my 2007 3.5 L. dealer changed plug and wire on #2 cylinder. had the same issue on way home tonight but the lights reset on their own so don't know what the code was. will keep u updated
Just got mine back from the dealer and they replaced 2 spark plugs and a wire. Apparently the wire was arcing. I was told that the traction control light comes on in conjunction with the engine light as a safety feature to the engine when a misfire occurs. It seems to be running fine again. To be continued........?
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