Diagnostic Procedure

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Fig 1: DTC P0120: Throttle Position Sensor Circuit (Steps 1-6)

Courtesy of GENERAL MOTORS CORP.

Fig 2: DTC P0120: Throttle Position Sensor Circuit (Steps 7-15)

Courtesy of GENERAL MOTORS CORP.

Fig 3: DTC P0120: Throttle Position Sensor Circuit (Steps 16-24)

Courtesy of GENERAL MOTORS CORP.

Fig 4: DTC P0120: Throttle Position Sensor Circuit (Steps 25-33)

Courtesy of GENERAL MOTORS CORP.