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2003 GMC Sierra 1500 HD SLE 6.0L MIL Lamp on
Posted to GM Driveability on 6/11/2007 9 Replies

Intermittent codes P0120 & P0220. Turning on check engine light and reduced power. Have cleaned two grounds on back of cylinder heads,chassis grounds, and also main block grounds. Have replaced throttle body and T.P.S. assembly, Throttle body module and APP pe...

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  Related Documents & Media  2003 GMC Sierra 1500 HD SLE

 
Message Closed w/Summary

car Vehicle Data

2003 GMC Sierra 1500 HD SLE

VIN 1GTGK13U53
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.4X4 Lift Kit

Trouble Codes

P0120Throttle Position Sensor Circuit Malfunction
P0220Throttle Position Sensor 2 Circuit Malfunction
Message Closed w/Summary

car Vehicle Data

2003 GMC Sierra 1500 HD SLE

VIN 1GTGK13U53
Engine6.0 L / 8 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFI / sefi
EmissionsOBD-II Compliant
SymptomsMIL Lamp On
OccursIntermittently
Misc.4X4 Lift Kit

Trouble Codes

P0120Throttle Position Sensor Circuit Malfunction
P0220Throttle Position Sensor 2 Circuit Malfunction