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

Are any indicators illuminated?

Go to Symptoms - Instrument Panel, Gages and Console

Go to Step 3

3

  1. Turn the ignition OFF.
  2. Turn the headlamp switch to OFF.
  3. Remove the key from the ignition.
  4. Open the driver door.

Does the chime sound?

Go to Step 4

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

4

  1. Turn the ignition OFF.
  2. Disconnect the ignition switch.
  3. Install a scan tool.
  4. Turn the ignition ON, with the engine OFF.
  5. With a scan tool, observe the Key in Ignition parameter in the body control module (BCM) data list.

Does the Key in Ignition parameter display Off?

Go to Step 6

Go to Step 5

5

Test the key in ignition signal circuit for a short to ground. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 8

Go to Step 7

6

Replace the ignition switch. Refer to Ignition and Start Switch Replacement in Steering Wheel and Column.

Did you complete the replacement?

Go to Step 8

--

7

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

Did you complete the replacement?

Go to Step 8

--

8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2