GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Radio/Audio System Check?

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Go to Step 2

Go to Radio/Audio System Check

2

  1. Turn on the radio.
  2. Use the J 39916-A in order to isolate the inoperative speaker, if needed.
  3. Adjust the FADE and BALANCE to the inoperative speaker.
  4. Use the J 39200 in order to measure the A/C voltage from the speaker connector terminal A to B (speaker connected).

Is A/C voltage measured?

--

Go to Step 3

Go to Step 4

3

Replace the speaker.

Did you complete the repair?

--

Go to Radio/Audio System Check

--

4

Inspect the speaker circuits for an open or a short to ground.

Was an open or short to ground found?

--

Go to Step 5

Go to Step 6

5

Repair the open or the short to ground in the speaker circuit.

Did you complete the repair?

--

Go to Radio/Audio System Check

--

6

Is the vehicle equipped with UZ8?

--

Go to Step 7

Go to Step 8

7

Replace the audio amplifier.

Did you complete the repair?

--

Go to Radio/Audio System Check

--

8

Replace the radio. Refer to one of the following procedures:

    •  Radio Replacement
    •  Radio Replacement
    •  Radio Replacement

Did you complete the repair?

--

Go to Radio/Audio System Check

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