GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to the LOCK position.
  2. Disconnect the seat belt/ ignition key/ lamps alarm connector.
  3. Connect a fused jumper (3A) between B+ and the seat belt/ ignition key/ lamps alarm harness connector terminal C2.

Is the fasten belt indicator ON?

--

Go to Step 4

Go to Step 2

2

  1. Remove and disconnect the instrument cluster.
  2. Refer to Instrument Cluster Replacement

  3. Use a DMM in order to measure the resistance between the seat belt/ ignition key/ lamps alarm harness connector terminal C2 and the instrument cluster connector terminal D10.

Is the resistance within the specified value range?

Less than 2 ohms

Go to Step 3

Go to Step 5

3

Use a DMM in order to measure the resistance between the seat belt/ ignition key/ lamps alarm harness connector terminal C2 and the ground.

Is the resistance within the specified value range?

Infinite

Go to Step 6

Go to Step 7

4

  1. Inspect the seat belt/ ignition key/ lamps alarm connector terminal C2 for a poor connection.
  2. If the connector is OK, replace the seat belt/ ignition key/ lamps alarm.
  3. Has the repair been made?

--

Go to Step 8

--

5

  1. Repair the poor connection or the open in CKT 234.
  2. Inspect the system.

Has the repair been made?

--

Go to Step 8

--

6

  1. Repair the fasten seat belt indicator that is inoperative due to a problem within the instrument cluster.
  2. Refer to Instrument Cluster Replacement

  3. Inspect the system.

Has the repair been made?

--

Go to Step 8

--

7

  1. Repair the short to ground in CKT 234.
  2. Inspect the system.

Has the repair been made?

--

Go to Step 8

--

8

  1. Ensure that the ignition switch is in the LOCK position.
  2. Install the components that were removed.

Have all repairs been made?

--

Go to Audible Warnings System Check