2003 Hummer H2 6.0L Misfire
One for you GoodWrench Boyz. Got this 03 H2 Hummer that sets A P0300 misfire code within a minute of startup. Shop that has it has replaced with GM parts, all of the injectors, coil packs, spark plugs and catalytic converters trying to solve this problem. They...
Summary posted 5/9/2017
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Vehicle Data2003 Hummer H2
Trouble Codes
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Message Closed w/Summary
Vehicle Data
2003 Hummer H2
VIN | 5GRGN23U23 |
Engine | 6.0 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection / sefi |
Emissions | OBD-II Compliant |
Symptoms | Misfire |
Occurs | Always |
Trouble Codes
P0300 | Multiple Misfire Detected |