GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Audible Warnings System Check?

--

Go to Step 2

Go to Audible Warnings System Check

2

With the seat belt unbuckled. Connect a test lamp from the seat belt switch connector cavity 2 to B+.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3

Test for continuity in the GRY/RED wire between connector cavity 2 of the seat belt switch and connector cavity 1 of the audio alarm module.

Is there continuity in the GRY/RED wire?

0-2ohms

Go to Step 8

Go to Step 7

4

Test for continuity in the BLK wire between the seat belt switch connector cavity 1 and G400.

Is there continuity between cavity 1 and G400?

0-2ohms

Go to Step 5

Go to Step 6

5

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

Is the repair complete?

--

Go to Audible Warnings System Check

--

6

Repair the wire between connector cavity 1 of the seat belt switch and G400. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Audible Warnings System Check

--

7

Repair the open GRY/RED wire between cavity 2 of the seat belt switch connector and cavity 1 of the audio alarm module connector. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Audible Warnings System Check

--

8

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

--