GM Service Manual Online
For 1990-2009 cars only

Step

Action

Yes

No

Schematic Reference: Seat Belt Schematics

1

Did you review the Seat Belt System Description and Operation, and perform the necessary inspections?

Go to Step 2

Go to Seat Belt System Description and Operation

2

  1. Depending on which retractor is having the malfunction, get inside the vehicle and close the door.
  2. Disconnect either the RH or LH seat belt retractor connector.
  3. Test either seat belt retractor actuator ground circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 3

3

  1. Using a test lamp test the seat belt retractor actuator connector from battery positive voltage to ground circuit in actuator. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
  2. Open the door.

Does the test lamp illuminate?

Go to Step 8

Go to Step 4

4

  1. Disconnect the Front door lock actuator connector, on the side of vehicle that is malfunctioning.
  2. Test the ground circuit for an open or high resistance that connects seat belt retractor actuator and front door lock actuator. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

Go to Step 5

5

  1. The front door lock actuator connector is still disconnected.
  2. Using a test lamp test the front door lock actuator connector from battery positive voltage to ground circuit in actuator. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Does the test lamp illuminate?

Go to Step 7

Go to Step 6

6

Test the ground circuit for an open or high resistance that connects front door lock actuator to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 9

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7

Replace the front door lock actuator. Refer to Door Lock Actuator Replacement in Doors.

Did you complete the replacement?

Go to Step 9

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8

Replace the seat belt retractor actuator. Refer to Seat Belt Replacement - Driver or Passenger .

Did you complete the replacement?

Go to Step 9

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9

Review and test the operation of seat belt retractor system.

Did you complete the repair?

System OK

Go to Step 2