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P1221 Diagnostic Trouble Code Discussion for August 2004

TP Sensor 2 Signal Correlation


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Trouble Ticket Help Requests for DTC P1221
Help Request Posted
2001 Chevrolet Silverado 2500 HD 8.1L MIL Lamp on VIN: 1GCHK24GX1
P1221: TP Sensor 2 Signal Correlation. since truck was new this has been a on going problem the past year it has had the tac module changed and the problem had hapened only twice
August 19, 2004
2001 Chevrolet Silverado 2500 HD 8.1L MIL Lamp on VIN: 1GCHK24GX1
P1221: TP Sensor 2 Signal Correlation. since truck was new this has been a on going problem the past year it has had the tac module changed and the problem had hapened only twice
August 19, 2004