GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Yukon Denali 🢒 Body and Accessories 🢒 Entertainment 🢒 Radio/Audio System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition switch to the ON position, with the engine OFF.
  2. Turn the radio ON.
  3. Position tuner on a strong radio station.
  4. Set the volume control to medium.

The radio display illuminates and sound is heard from the speakers.

2
  1. Turn the FADE control to the front speakers and then to the rear speakers.
  2. Return FADE control to the neutral position.
    • Only the front speakers are heard.
    • Only the rear speakers are heard.
    • The front and rear speakers are heard.

Speakers Inoperative - One

3
  1. Turn the BAL control to the left side speakers and then to the right side speakers.
  2. Return BAL control to the neutral position.
    • Only the left side speakers are heard.
    • Only the right side speakers are heard.
    • The left and right side speakers are heard.

Speakers Inoperative - One

4
  1. Depress the RECALL button.
  2. Adjust BASS control to the high and low position.
  3. Adjust TREB control to the high and low position.
  4. Return BASS and TREB control buttons to the neutral position.
    • The radio display toggles between the tuner and the clock.
    • The music attenuates between high and low bass frequencies.
    • The music attenuates between high and low treble frequencies.
    • The music returns to nominal bass and treble frequencies.

Speakers Inoperative - One

5
    • Place the headlamp and dimmer switch in the PARK position.
    • Rotate dimming switch left to right.

The radio display and the button illumination intensity vary.

7
  1. Place a cassette tape in the tape player.
  2. Operate all of the available features.
  3. Eject the cassette.
    • The cassette tape plays.
    • All features operate.
    • The cassette tape ejects.

8
  1. Play a compact disc (CD).
  2. Operate all of the available features.
  3. Eject the CD.
  4. Turn the headlamp and panel dimmer switch to the park position.
  5. Adjust the dimming switch to the maximum intensity and then to the minimum intensity.
    • The CD plays.
    • All features operate.
    • The CD ejects.
    • Remote CD player illumination varies intensity.

9
  1. Press the power button on the rear stereo audio controller.
  2. Operate the available features.
  3. Place the headlamp and panel dimmer switch to the PARK position.
  4. Connect headphones to the rear stereo audio controller.
    • Power illuminates.
    • The rear door speakers and the rear headliner speakers mute.
    • The rear stereo audio controller backlights.
    • Sound is heard from the headphones.

10
  1. Insert the CD(s) into the CD changer.
  2. Select the CD to be played.
    • The CD changer will shuffle the CD(s).
    • The CD will be heard through the speakers or headphones.

Remote Playback Device Inoperative