GM Service Manual Online
For 1990-2009 cars only

Radio Poor Reception AM

Step

Action

Yes

No

1

Inspect the audio system for normal operation.

Is AM inoperative and the rest of the system operating properly?

Go to Step 2

System OK

2

Replace the radio. Refer to Radio Replacement .

Is the repair complete?

System OK

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Radio Poor Reception FM

Step

Action

Yes

No

1

  1. Unplug the antenna cable from the antenna.
  2. Connect the test antenna to the antenna cable.
  3. Inspect the FM radio reception.

Is the FM radio operating properly?

Go to Step 2

Go to Step 3

2

Replace the antenna. Refer to Radio Antenna Module Replacement .

Is the repair complete?

System OK

--

3

  1. Remove the cassette radio from the instrument panel.
  2. Unplug the antenna cable from the audio system.
  3. Plug the test cable into the audio system.
  4. Inspect the FM radio reception.

Is the FM radio operating properly?

Go to Step 4

Go to Step 5

4

Replace the antenna cable between the audio system and the antenna.

Is the repair complete?

System OK

--

5

Replace the cassette radio. Refer to Radio Replacement .

Is the repair complete?

System OK

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