GM Service Manual Online
For 1990-2009 cars only

Radio Poor Reception FM

Step

Action

Yes

No

1

Inspect the audio system for normal operation.

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

Go to Step 2

System OK

2

Replace the radio.

Is the repair complete?

System OK

--

Radio Poor Reception AM

Step

Action

Yes

No

1

  1. Unplug the antenna cable from the antenna.
  2. Connect the test antenna to the antenna cable.
  3. Check the AM radio reception.

Is the AM radio operating properly?

Go to Step 2

Go to Step 3

2

Replace the antenna.

Is the repair complete?

System OK

--

3

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

Is the AM 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 audio system.

Is the repair complete?

System OK

--