GM Service Manual Online
For 1990-2009 cars only

The rear-mounted, telescoping, rod-type antenna fully extends whenever the radio is in use. The antenna retracts when the following conditions exist:

    • The radio is off.
    • The ignition switch is in the OFF position.
    • The retained accessory power (RAP) is inactive.

The antenna mast is attached to a plastic cable that is driven up and down by an electric motor. The motor is automatically shut off by the limit switches when the antenna reaches the full up or full down position.