GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Latch the driver's seat belt.
  2. Disconnect the body control module (BCM) connector C2 and connector C3.
  3. Turn the ignition switch to run.

Is the fasten seat belt indicator on?

--

Go to Step 2

Go to Step 3

2

  1. Test circuit  237 for a short to B+
  2. If circuit 237 is OK, Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

--

3

Connect a test lamp between the BCM connector C2 terminal B and connector C3 terminal C13.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

4

  1. Test circuit 238 for a short to ground.
  2. If circuit 238 is OK, replace the seat belt switch.

Is the repair complete?

--

System OK

--

5

Replace the BCM. Refer to Body Control Module Replacement .

Is the repair complete?

--

System OK

--