2000 GMC C6500 7.4L MIL Lamp on
This truck illuminates MIL w/ P1221 and P1120; also will
default to limp-in and illuminate "POWER LOSS" light when
code sets.
FIX posted 12/8/2006
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Message Closed w/FIX
Vehicle Data2000 GMC C6500
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2000 GMC C6500
VIN | 1GDJ7H1D3Y |
Engine | 7.4 L / 8 cyl |
Delivery | FI |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Misc. | Big Moving Truck |
Trouble Codes
P1120 | TP Sensor 1 Circuit Malfunction |
P1221 | TP Sensor 2 1-2 Correlation |