Diagnostic Procedure

Fig 1: DTC P1518: TAC Module Serial Data Fault (Steps 1-8)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P1518: TAC Module Serial Data Fault (Steps 9-16)

Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC P1518: TAC Module Serial Data Fault (Steps 17-24)

Courtesy of GENERAL MOTORS CORP.

Fig 4: DTC P1518: TAC Module Serial Data Fault (Steps 25-29)

Courtesy of GENERAL MOTORS CORP.