2008 Pontiac Grand Prix 3.8L Misfire
Vehicle was towed in for a no start problem. I replaced the ignition module and it ran great. The customer soon after complained of intermittent misfires when on the freeway going over 75mph. He said if he keeps it under 75, it runs great and never a miss or c...
FIX posted 3/5/2015
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Vehicle Data2008 Pontiac Grand Prix
Trouble Codes
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Vehicle Data
2008 Pontiac Grand Prix
VIN | 2G2WP55228 |
Engine | 3.8 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Misfire |
Occurs | Cruise |
Trouble Codes
P0300 | Multiple Misfire Detected |