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2008 Hummer H3 X 3.7L Missfire P0300
hummer came in with check engine light code p0300 misfire history shows #4 misfiring switch coil still miss on #4 switch plug still miss on #4 did relative compression test with pico and #4 was a little lower then the rest just for numbers did a manual compres...
FIX posted 10/5/2015
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Message Closed w/FIX
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10 Replies Received
10 Replies Received
Related Documents & Media | VIN | 5GTEN13E88 |
| Engine | 3.7 L / 5 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | Missfire P0300 |
Message Closed w/FIX
Vehicle Data
2008 Hummer H3 X
| VIN | 5GTEN13E88 |
| Engine | 3.7 L / 5 cyl / GAS |
| Trans | 4-speed Automatic (Electronic) |
| Delivery | Fuel Injection |
| Affected | Missfire P0300 |
Video