GM Service Manual Online
For 1990-2009 cars only

Pressing the rear compartment lid release switch provides an input signal to the instrument cluster. The instrument cluster sends a Class 2 serial data message to the body control module (PZM). The PZM grounds connector C6 of the rear compartment lid release solenoid through CKT 1344 (LT BLU) if the following conditions are present:

    • The transaxle is in the PARK position.
    • The valet lockout switch is closed.

Power is supplied through the following components to the now-grounded CKT 1344 (LT BLU):

    • The RADIO/PHONE fuse
    • CKT 40
    • The coil of the rear compartment lid release relay

The relay coil energizes and closes the relay contacts.

Power is supplied from the CONVENIENCE fuse through the following components:

    • CKT 2040 (ORN)
    • The now-closed relay contacts
    • CKT 56 (BLK/WHT)
    • The rear compartment lid release solenoid

The solenoid energizes and the rear compartment lid latch assembly releases the rear compartment lid.