GM Service Manual Online
For 1990-2009 cars only

Caution: To help avoid personal injury from unrepaired crash damage to a restraint system, perform the seat belt check for each seat belt system. Replace the seat belt system if there is any doubt about the condition of system components.

Perform the following inspection from the driver seat:

  1. Turn the ignition switch to the ON position. Verify proper operation of the seat belt reminder lamp with the belt buckled and with the belt unbuckled. Refer to Seat Belt System Description and Operation .
  2. Inspect the shoulder belt guide in order to ensure that the following conditions are met:
  3. • The shoulder belt guide swivels freely.
    • The seat belt webbing is seated flatly in the guide slot.
    • The seat belt webbing does not bind.
  4. Verify that the seat belt buckle faces inboard and is accessible.
  5. Verify that the seat belt retractor units are securely attached.
  6. Verify that the seat belt anchor bolts are secure.
  7. Fully extend the seat belt webbing. Verify that the seat belt webbing does not have any twists or tears.
  8. Allow the seat belt webbing to retract. Verify that the seat belt webbing returns freely and completely back into the retractor.
  9. Snap the seat belt latch plate into the buckle.
  10. Sharply tug on the seat belt latch plate and the buckle. Verify that the seat belt latch plate and the buckle remain locked when tugged.
  11. Push the button on the buckle.
  12. Verify that the seat belt latch plate releases easily from the buckle.

    Verify that the button returns to its original position.

Repeat the inspection procedure (steps 2 through 10) from the front passenger seat.

Repeat the inspection procedure (steps 2 through 10) from the rear seat.

For information on removal of the rear seat cushion, refer to Rear Seat Cushion Replacement in Seats.

Caution: Perform this test in an area clear of other vehicles or obstructions. Do not conduct this test on the open road. A large, empty parking lot is suitable. Failure to observe this precaution may result in damage to the vehicle and possible personal injury.

  1. Fasten the seat belts, an assistant is needed when the retractor under test is not part of the driver seat belt.
  2. Accelerate the vehicle slowly to 16 km/h (10 mph) and apply the brakes firmly.
  3. Verify that the seat belt locks when braking firmly.
  4. If the belt does not lock, proceed with the following steps.
  5. 4.1. Remove the seat belt retractor assembly.
    4.2. Tilt the seat belt retractor slowly.

    Object Number: 157277  Size: SH
    4.3. Ensure that the seat belt webbing can be pulled from the retractor at an inclination of 15 degrees or less and cannot be pulled from the retractor at an inclination of 45 degrees or more.
    4.4. If the seat belt retractor does not operate as described, replace the retractor assembly. Refer to the following procedures:
       •  Seat Belt Retractor Replacement - Left Front
       •  Seat Belt Retractor Replacement - Right Front
       •  Seat Belt Retractor Replacement - Center Rear
       •  Rear Seat Belt Retractor Replacement