GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Seat Belt Schematics

1

Did you perform the Diagnostic System Check - Seat Belts?

Go to Step 2

Go to Diagnostic System Check - Seat Belts

2

  1. Turn OFF the ignition.
  2. Buckle the driver's seat belt.
  3. Disconnect the body control module (BCM) connector C3.
  4. Turn ON the ignition, with the engine OFF.

Does the seat belt indicator stay ON continuously?

Go to Step 3

Go to Step 4

3

Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the replacement?

Go to Step 7

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4

  1. Disconnect the driver seat belt switch connector.
  2. Test the driver seat belt switch signal circuit for a short to ground. Refer to Circuit Testing in Wiring Systems.

Did you find and correct the condition?

Go to Step 7

Go to Step 5

5

  1. Test the driver seat belt switch ground circuit for an open or high resistance. Refer to Circuit Testing in Wiring Systems.
  2. If the driver seat belt switch ground circuit is OK, replace the driver seat belt switch. Refer to Seat Belt Buckle Replacement - Left Front .

Did you find and correct the condition?

Go to Step 7

Go to Step 6

6

Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 7

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7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2