
2003 GMC Sonoma SLS 4.3L Poor Idle Quality, Misfire
truck came in for emissions readiness test not complete cat and evap won't set. car has a slightly rough idle and under load mil flashes dtd po303. new plugs were put in and another garage had told them the cats where blocked.. we put on two new cats. same res...
FIX posted 5/5/2011
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Message Closed w/FIX
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VIN | 1GTDT19X43 |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire |
Occurs | Under Load |
Trouble Codes
P0303 | Cylinder 3 Misfire Detected |
Message Closed w/FIX
Vehicle Data
2003 GMC Sonoma SLS
VIN | 1GTDT19X43 |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | Fuel Injection |
Emissions | OBD-II Compliant |
Symptoms | Poor Idle Quality, Misfire |
Occurs | Under Load |
Trouble Codes
P0303 | Cylinder 3 Misfire Detected |