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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 337 (Shift Lock Control System) >> Diagnostic Information and Procedures >> DTC B270A: Park Lock Solenoid Control Circuit Short to Ground >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.

The body control module controls the transmission shift lock control solenoid actuator by providing a battery positive voltage to the solenoid when the brake pedal is applied. The body control module monitors the voltage and current flow of the control circuit.