Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

Check Engine Light Misfire code

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Old 02-15-2010, 08:57 AM
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Join Date: Jan 2010
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Default Check Engine Light Misfire code

I have an 06 H3 and have a question has does anyone get a check engine light and when they scan it get a misfire code. I know they say at idle the engine will decrease in rpm but I get it when going true deep snow and working the truck alittle or when remote started. Sometimes it stays on for a day or two sometimes goes off in a few minutes. I moved the misfired coil pack to a different plug to see if that is the problem and ideas or suggestions would be greatful
 
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