2001 GMC Sierra 1500 SL 4.3L Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp on
CUST CAME IN WITH A P0300. DID MAJOR TUNE UP. STILL HAD MISFIRES ON B2. CHECKED FUEL PRESSURE, COMPRESSION, AND INJECTOR BALANCE, AND TIMING. ALL OK. REPLACED CAM SENSOR DO TO CORROSION IN DISTRIBUTOR. REPLACED POPPETS FOR TSB UPGRADE TO MPFI INJECTORS. RECORD...
FIX posted 9/18/2007
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Vehicle Data2001 GMC Sierra 1500 SL
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2001 GMC Sierra 1500 SL
VIN | 1GTEC14W41 |
Engine | 4.3 L / 6 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | Excessive Emissions, Poor Idle Quality, Misfire, MIL Lamp On |
Occurs | Always |
Trouble Codes
P0300 | Multiple Misfire Detected |