The following schematic describes the 2003 GMC Envoy XL Wiring and Circuit Diagram. The is designed to prevent the automatic transmission from being shifted out of PARK to any range unless the brake pedal is depressed. GMC Envoy XL consists of fuse (underhood fuse block), park/neutral position switch, stop lamp switch, A/T shift lock actuator.

GMC Envoy XL Shift Interlock System Wiring Diagram

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