GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Disconnect the body control module (BCM) connector C2 and connector C3.
  2. Connect a 15A fused jumper from BCM connector C2 terminal B to connector C3 terminal C4.

Is the fasten seat belt indicator on?

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Go to Step 2

Go to Step 3

2

  1. Test for a poor connection at the BCM connector C3 terminal C4.
  2. If the connection is OK, Replace the BCM. Refer to Body Control Module Replacement .

Is the repair complete?

--

System OK

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3

  1. Leave the 15A fused jumper connected.
  2. Connect a test lamp from instrument cluster connector terminal A13 to ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 4

4

Repair the open in circuit 237 between the BCM and the instrument cluster.

Is the repair complete?

--

System OK

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5

  1. Test for an open in circuit 650 between the instrument cluster and S216.
  2. Test for a poor connection at the instrument cluster connector.
  3. If circuit 650 and the connections are OK, replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

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