Having problems with your 2004 GMC Sierra 1500 Crew Cab ?

I got a 2004 sierra 1500 5.3, it has a random misfire, I already changed the plugs, wires, and checked the coil pack. When hooked to a code scanner it doesn't read anything is wrong. Check engine light is not on. Anyone have any ideas?

Posted / edited by AnonymousUser on : 15-01-2018

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Repair Help & Product Troubleshooting for 2004 GMC Sierra 1500 Crew Cab

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