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hummer mechanic people!!!!

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hummer mechanic people!!!! - 11/18/2006 3:00:43 PM

importkiller

Posts: 7254
Status: offline

I know we have at least two on here posting in the head and valve thread.

On my paperwork from the dealer it said that I have a history code P0300, what is this code?

thanks!

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RE: hummer mechanic people!!!! - 11/18/2006 3:18:38 PM

cnynctry

Posts: 61
Joined: 8/24/2006
From: Prescott Valley, AZ
Status: offline

P0300 Random Misfire Detected.

http://www.findonefindall.com/obdii-errorcodes.htm

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RE: hummer mechanic people!!!! - 11/18/2006 3:50:06 PM

H3X442

Posts: 180
Joined: 11/8/2006
Status: offline

cnynctry is correct and on the 2 trucks we replaced the head on this was the first symptom. You may or may not feel a misfire on this code. Did they make a repair for this code??. Steve

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RE: hummer mechanic people!!!! - 11/18/2006 4:18:52 PM

importkiller

Posts: 7254
Status: offline

They told me about the misfire but I didn't know if that was this code number or if it was something different. As far as the misfire, they said that everything was fine now and found all cylinders equal, I guess they did a compression test. They said the misfire was 280 miles ago so they don't think it's a problem.

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