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International Automotive Technicians Network
1998 GMC C2500 Sierra SL 6.5L MIL Lamp on
Posted to GM Driveability on 7/2/2006 6 Replies

Hello Techs, Intermittent DTC P1191 (Intake Air Duct Leak), P0101 (MAF Sensor Performance), P0400 (EGR System Performance) stored in PCM memory. Inspected intake air ducting, no problem detected. We have resealed upper and lower intake manifold gaskets along w...

6 Replies Received (View Replies)

  Related Documents & Media  1998 GMC C2500 Sierra SL

 
Message Closed w/FIX

car Vehicle Data

1998 GMC C2500 Sierra SL

VIN 1GTFC24S4W
Engine6.5 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

DTC
P0101Mass Airflow Sensor Range/Performance
P0400Exhaust Gas Recirculation System Flow Malfunction
P1191Intake Air Temperature Sensor Rationality / Performance
Message Closed w/FIX

car Vehicle Data

1998 GMC C2500 Sierra SL

VIN 1GTFC24S4W
Engine6.5 L / 8 cyl / DIESEL
Trans4-speed Automatic (Electronic)
DeliveryFI
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently

Trouble Codes

DTC
P0101Mass Airflow Sensor Range/Performance
P0400Exhaust Gas Recirculation System Flow Malfunction
P1191Intake Air Temperature Sensor Rationality / Performance