GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

  1. Turn the ignition switch to RUN.
  2. Turn the radio ON.

The power antenna mast extends to the full up position.

Antenna Inoperative

2

Turn the radio OFF.

The power antenna mast retracts to the full down position.

Antenna Inoperative

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.