
2001 Chevrolet Express 3500 8.1L MIL Lamp on, reduced engine power
reduced engine power happens any time , sometimes once a day , no patern to problem . all chassis grounds have been cleaned and checked . all wiring between tac mod and throttle body have been inspected and tested with a dmm, all ok. 5 volt reference volt to t...
Summary posted 8/12/2005
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Message Closed w/Summary
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VIN | 1GCHG39G11 |
Engine | 8.1 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / tbi |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp on, Reduced Engine Power |
Occurs | Cold, Hot, Under Load, on Decel, Intermittently |
Trouble Codes
P1120 | TP Sensor 1 Circuit Malfunction |
P1220 | TP Sensor 2 Circuit Malfunction |
P1515 | Control Module Throttle Actuator Position Performance |
Message Closed w/Summary
Vehicle Data
2001 Chevrolet Express 3500
VIN | 1GCHG39G11 |
Engine | 8.1 L / 8 cyl / GAS |
Trans | 4-speed Automatic (Electronic) |
Delivery | FI / tbi |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp on, Reduced Engine Power |
Occurs | Cold, Hot, Under Load, on Decel, Intermittently |
Trouble Codes
P1120 | TP Sensor 1 Circuit Malfunction |
P1220 | TP Sensor 2 Circuit Malfunction |
P1515 | Control Module Throttle Actuator Position Performance |