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2010 Chevrolet Express Code P0304

Tiny
MASON ANDRAS
  • MEMBER
  • 2010 CHEVROLET EXPRESS
  • 6.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 91,769 MILES
2010 Chevy express 3500 6.0
P0304 code
Changed plugs, wires, coil pack and injector then cleared code
Still getting slight rough idle and still getting code P0304
No apparent vacuum leaks found
Any suggestions?
Thursday, October 8th, 2015 AT 8:04 AM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
That is a misfire code and can be anything from a basic engine problem to a screwed up sensor as well as all the parts you have replaced. Have a pro scan for codes with a freeze frame so he can check other sensors. Cheapest way out on one of these.
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Thursday, October 8th, 2015 AT 9:42 AM

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