GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster System Check?

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Go to Step 2

Go to Instrument Cluster System Check

2

  1. Fasten the drivers seat belt switch.
  2. Disconnect the Body Control Module (BCM) connector C2.
  3. Turn the ignition switch to RUN.

Is the FASTEN BELTS indicator on?

--

Go to Step 3

Go to Step 6

3

Inspect for a short to B+ on CKT 234 (YEL).

Is the circuit shorted?

--

Go to Step 4

Go to Step 5

4

Repair CKT 234 (YEL).

Is the repair complete?

--

Go to Instrument Cluster System Check

--

5

Repair or replace the instrument cluster.

Is the repair complete?

--

Go to Instrument Cluster System Check

--

6

  1. Connect BCM connector C2.
  2. Turn the ignition switch to RUN.
  3. Connect a scan tool.
  4. Use the BCM Data List Outputs Function on the scan tool in order to turn on and off the FASTEN BELTS indicator.

Does the indicator turn on and off when commanded?

--

Go to Step 8

Go to Step 7

7

Replace the BCM.

Is repair complete?

--

Go to Instrument Cluster System Check

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8

Repair BCM connector C2.

Is the repair complete?

--

Go to Instrument Cluster System Check

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