GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the radio/audio system check?

--

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 digital multimeter (DMM)J 39200 , 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 or the sub-woofer amplifier supplying the inoperative speaker.
  2. With a DMMJ 39200 , measure the resistance at the inoperative speaker connector from cavity A to ground.

Is the resistance infinite?

--

Go to Step 4

Go to Step 7

4

With a DMMJ 39200 , measure the resistance at the speaker from cavity B to ground.

Is the resistance infinite?

--

Go to Step 5

Go to Step 7

5

Use a DMMJ 39200 in order to check both speaker feed wires for continuity between the speaker and the radio or sub-woofer amplifier.

Does continuity exist?

--

Go to Step 9

Go to Step 8

6

Replace the speaker. Refer to the appropriate repair procedure; Radio Front Side Door Lower Speaker Replacement Front Upper Speaker Replacement Rear Pillar Speaker Replacement Radio Rear Side Door Speaker Replacement .

Is the repair complete?

--

Go to Radio/Audio System Check

--

7

Repair the short to ground in the speaker feed circuit.

Is the repair complete?

--

Go to Radio/Audio System Check

--

8

Repair the open in the speaker feed circuit.

Is the repair complete?

--

Go to Radio/Audio System Check

--

9

Service the radio. Refer to Radio Replacement

Is the repair complete?

--

Go to Radio/Audio System Check

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