GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Has the Radio/Audio System Check been performed?

--

Go to Step 2

Go to Radio/Audio System Check

2

  1. Turn the ignition switch off.
  2. Disconnect the speaker connector.
  3. With a J 39200 DMM, measure the resistance of the speaker.

Is the resistance within the specified range?

4-15 ohms

Go to Step 3

Go to Step 6

3

  1. Disconnect the radio connectors.
  2. With a J 39200 DMM, measure the resistance at the speaker from cavity A to ground.

Is the resistance infinite?

--

Go to Step 4

Go to Step 7

4

With a J 39200 DMM, measure the resistance of the speaker feed circuits at the radio.

Is the resistance infinite?

--

Go to Step 5

Go to Step 7

5

  1. Reconnect the speaker
  2. With a J 39200 DMM, measure the resistance of the speaker feed circuits at the radio.

Is the resistance within the specified range?

4-15 ohms

Go to Step 10

Go to Step 9

6

Replace the speaker.

Is the repair complete?

--

Go to Radio/Audio System Check

--

7

Repair the short to ground in the speaker feed circuit. Refer to Wiring Repairs .

Is the repair complete?

--

Go to Radio/Audio System Check

--

8

Repair the poor connections at the radio or speaker. Refer to Wiring Repairs .

Is the repair complete?

--

Go to Radio/Audio System Check

Go to Step 10

9

  1. Repair any poor connections at the speaker. Refer to Wiring Repairs .
  2. Repair any poor connections at the in-line connectors. Refer to Wiring Repairs .
  3. Repair any opens in the speaker feed circuits. Refer to Wiring Repairs .

Is the repair complete?

--

Go to Radio/Audio System Check

--

10

Service the radio

Is the repair complete?

--

Go to Radio/Audio System Check

--