96liftedchevy
Newbie
- Joined
- Oct 20, 2011
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I have a 96 Silverado with a 5.7 Vortec. When I drive 65 or over the truck shakes like a tire is out of balance and the check engine light flashes. I ran the code and it's a p300 multiple miss fire. I can get on it hard in town or just drive in town and it's fine but anything over 65 it starts miss fire. A year ago I put a new distributor new plugs and wires and a new ignition. It started this a few weeks ago does anyone know or has had this problem before
