GM Service Manual Online
For 1990-2009 cars only

Luggage Compartment Description and Operation Sedan

Rear Compartment Lid Release

The rear compartment lid can be released in one of three ways:

    • Inserting the key into the key lock cylinder, if equipped
    • Operating the rear compartment lid release switch
    • Using the keyless entry fob

To operate rear compartment lid with the rear compartment lid release switch or with the rear compartment release button on the key fob, the gear selector may be in any position, but vehicle speed must equal 0 for the rear compartment lid to release.

When the rear compartment lid release switch is pushed, the rear compartment lid release signal circuit to the body control module (BCM) is grounded. BCM then grounds the coil side of the trunk release relay through the trunk release relay control circuit. With this voltage is applied to the rear compartment lid release actuator, opening the rear compartment.

Luggage Compartment Description and Operation Extended Sedan

Liftgate Release

The liftgate can be released by operating the liftgate release switch or pressing the liftgate release button on the key fob. The transmission must be in the PARK position for the liftgate to release.

When the liftgate release switch is pushed, the liftgate release switch signal circuit to the body control module (BCM) is grounded. When the liftgate release switch signal circuit is grounded, the BCM grounds the coil side of the trunk release relay through the trunk release relay control circuit. With ground applied to the coil side of the trunk release relay, voltage is applied to the liftgate release actuator, opening the liftgate.