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International Automotive Technicians Network
2003 GMC Safari 4.3L Misfire
Posted to GM Driveability on 9/19/2011 19 Replies

This van has been in and out of the dealership a few times and never been [...] driving up hill usually,under load, just before it shifts into overdrive, it will miss for a couple of seconds then go away. It will set the check engine light on and sometimes mak...

19 Replies Received (View Replies)

  Related Documents & Media  2003 GMC Safari

 
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car Vehicle Data

2003 GMC Safari

VIN 1GKEL19X43
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load, Intermittently

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
P0300Multiple Misfire Detected
Message Closed

car Vehicle Data

2003 GMC Safari

VIN 1GKEL19X43
Engine4.3 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsMisfire
OccursUnder Load, Intermittently

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
P0300Multiple Misfire Detected