Shift Lock Control System: Other GMC Sierra III

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections

Reference Information

Schematic Reference

Shift Lock Control Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEWS - INDEX

Description and Operation

Automatic Transmission Shift Lock Control Description and Operation

Electrical Information Reference

1. «Circuit Testing»(ref-651023-S06735791342014081900000)
2. «Connector Repairs»(ref-651023-S36930316752014081900000)
3. «Testing for Intermittent Conditions and Poor Connections»(ref-651023-S31795657182014081900000)
4. «Wiring Repairs»(ref-651023-S35699655412014081900000)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

1. Ignition ON, clear the DTC. Observe the scan tool BCM Stop Lamp Relay Command parameter while pressing and releasing the brake pedal. The parameter should change between ON and OFF. If the parameter does not change between the specified values, refer to «Stop Lamps Malfunction»(ref-651044-S37947042932014081900000) .
2. Press the brake pedal, the vehicle operator should be able to move the shifter out of the PARK position.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Control Module References»(ref-651024-S37773196412014081900000) for BCM replacement, setup and programming