GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Remove the audio alarm module.
  2. Connect a fused jumper wire from the audio alarm module terminal K3 to B+.

Does the fasten safety belts indicator light?

--

Go to Step 2

Go to Step 3

2

Replace the audio alarm module.

Is the repair complete?

--

System OK

3

Backprobe the instrument cluster connector with a fused jumper wire from terminal 18 to B+.

Does the fasten safety belts indicator light?

--

Go to Step 4

Go to Step 5

4

Locate and repair the open in CKT 234 (YEL) between the audio alarm module and the instrument cluster.

Is the repair complete?

--

System OK

--

5

Check for an open in CKT 451 (BLK/WHT) between the instrument cluster and grounds G103 and G104.

Is there an open in CKT 451 (BLK/WHT) between the instrument cluster and grounds G103 and G104?

--

Go to Step 6

Go to Step 7

6

Locate and repair the open in CKT 451 (BLK/WHT) between the instrument cluster and grounds G103 and G104.

Is the repair complete?

--

System OK

--

7

Replace the instrument cluster.

Is the repair complete?

--

System OK

--