GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Audible Warnings Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

2

  1. Place the key in the ignition.
  2. Open the driver door.

Does the chime sound?

Go to Step 3

Go to Step 4

3

Do the courtesy lamps illuminate when the driver's door is opened?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Courtesy Lamps Inoperative in Lighting Systems

4

  1. Turn the radio ON.
  2. Adjust the radio balance and fade to the left front speaker.

Does the speaker operate properly?

Go to Step 5

Go to Speakers Inoperative - One or More in Entertainment

5

Replace the radio. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 6

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6

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2