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P1518 Diagnostic Trouble Code Discussion for November 2005

Throttle Actuator Control Module Serial Data Malfunction

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Trouble Ticket Help Requests for DTC P1518
Help Request Posted
2001 GMC Sierra 1500 HD SLE 6.0L Poor Idle Quality, MIL Lamp on VIN: 2GTEK69U71
P1518: Throttle Actuator Control Module Serial Data Malfunction. with new tac, throttle body, lab scope app don't know what good is had a 1v difference between wot and idle. in app2 and app3 signals at tac. leaning toward pcm have to go to dealer to flash. any suggestions or tests would be appreciated. thanks in advance dua...
November 30, 2005