2001 GMC Sonoma check engine light

Tiny
MARK FINEGAN
  • MEMBER
  • 2001 GMC SONOMA
  • 4 CYL
  • 2WD
  • MANUAL
  • 87,000 MILES
Please list possible causes for trouble code #p0304
Wednesday, October 28th, 2009 AT 12:46 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Basically, that tells me that there is a misfire on cylender 4. It could be caused by a few things. First, remove the spark plug and check it and check the spark plug wire.

Let me know what you find.
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Tuesday, November 17th, 2009 AT 5:55 PM

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