GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Did you perform the Audible Warnings System Check?

--

Go to Step 2

Go to Audible Warnings System Check

2

  1. Turn the ignition switch to ON.
  2. Disconnect the seat belt switch connector.

Does the alarm continue to sound?

--

Go to Step 3

Go to Step 4

3

Test the GRY/RED wire for a short to ground between the following components:

    • Connector C3 cavity 12 of the instrument cluster assembly
    • Cavity 1 of the audio alarm module.
    • S227
    • Cavity 2 of the seat belt switch connector
    • Cavity 5 of the sensing and diagnostic module (SDM).

Did you find a short to ground?

--

Go to Step 5

Go to Step 6

4

Replace the seat belt buckle. Refer to Seat Belt Retractor Replacement - Left Front in Seat Belts.

Is the repair complete?

--

Go to Audible Warnings System Check

--

5

Repair the short to ground in the GRY/RED wire between the following components:

    • Connector C3 cavity 12 of the instrument cluster assembly
    • Cavity 1 of the audio alarm module.
    • S227
    • Cavity 2 of the seat belt switch connector
    • Cavity 5 of the sensing and diagnostic module (SDM).

Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Audible Warnings System Check

--

6

Replace the audio Alarm module. Refer to Audio Alarm Module Replacement in Instrument Panel, Gauges and Console.

Is the repair complete?

--

Go to Audible Warnings System Check

--