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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1626 (Door Lock System And Door Handles) >> Diagnostic Information and Procedures >> Liftgate Release Malfunction >> Circuit/System Description

Circuit/System Description

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The liftgate switch is an input to the body control module (BCM). The BCM supplies battery voltage to the signal circuit and when the liftgate switch is activated the signal circuit voltage goes low. The BCM controls the liftgate latch assembly through the liftgate RLYS relay. When the liftgate switch signal is activated, the BCM enables the RLYS relay by applying battery voltage to the liftgate relay circuit and the relay is energized when the BCM grounds the RLYS relay control circuit. When the relay is energized battery voltage is supplied to the liftgate latch assembly through the liftgate latch control circuit.

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