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2004 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on, black smoke
Posted to GM Driveability on 6/4/2008 6 Replies

This vehicle sets a MAF code on every start up, 17 seconds after engine start. I can see exactly what it is doing but not why. The MAF GPS is too high at idle, 55-60 GPS. However, the voltage seems to be exactly correct at 1.25 to 1.35 on the scan tool, and 1....

6 Replies Received (View Replies)

  Related Documents & Media  2004 GMC Sierra 2500 HD SLE

 
Message Closed w/FIX

car Vehicle Data

2004 GMC Sierra 2500 HD SLE

VIN 1GTHK23284
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp on, Black Smoke
OccursAlways

Trouble Codes

P0101Mass Airflow Sensor Range/Performance
Message Closed w/FIX

car Vehicle Data

2004 GMC Sierra 2500 HD SLE

VIN 1GTHK23284
Engine6.6 L / 8 cyl / DIESEL
Trans5-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp on, Black Smoke
OccursAlways

Trouble Codes

P0101Mass Airflow Sensor Range/Performance