GM Service Manual Online
For 1990-2009 cars only

Seat Belt Retractor Replacement - No. 1 Center Rear TrailBlazer, Envoy and Bravada

Removal Procedure

  1. Remove the rear seat back assembly. Refer to Rear Seat Number 1 Back Replacement in Seats.

  2. Object Number: 753723  Size: SH
  3. Remove the rear seat belt anchor nut from the seat belt buckle bracket.

  4. Object Number: 753729  Size: SH
  5. Remove the rear seat back seat belt bezel by pressing in the buttons (1) on the plastic retainers.

  6. Object Number: 753736  Size: SH
  7. Remove the seat belt bezel from the seat belt.
  8. Remove the seat back cover and pad. Refer to Rear Seat Back Cushion Cover and Pad Replacement in Seats.

  9. Object Number: 757364  Size: SH
  10. Remove the seat belt from the retractor bracket by guiding it through the slot.

  11. Object Number: 753557  Size: SH
  12. Remove the rear seat belt center retractor retaining nut.
  13. Remove the center retractor assembly by pulling the push pin from the seat back frame.

  14. Object Number: 753559  Size: SH
  15. Remove the seat belt retractor bracket bolt (1) from the bracket and seat back frame.
  16. Remove the seat belt retractor bracket from the seat back frame.

Installation Procedure


    Object Number: 757367  Size: SH
  1. Position the seat belt retractor bracket on the seat back frame.

  2. Object Number: 753559  Size: SH
  3. Install the seat belt retractor bracket bolt (1) to the bracket and seat back frame.
  4. Tighten
    Tighten the seat belt retractor bracket bolt to 55 N·m (40 lb ft).

  5. Position the seat belt retractor assembly onto the seat back frame.
  6. Install the push pin on the seat back retractor to the seat back frame.

  7. Object Number: 753557  Size: SH
  8. Install the rear seat belt center retractor nut.
  9. Tighten
    Tighten the rear seat belt center retractor nut to 35 N·m (26 lb ft).


    Object Number: 757364  Size: SH
  10. Install the seat belt into the retractor bracket by guiding the belt through the slot in the bracket.
  11. Install the rear seat back pad and cover. Refer to Rear Seat Back Cushion Cover and Pad Replacement in Seats.
  12. Install the rear seat back seat belt bezel onto the seat belt.

  13. Object Number: 753736  Size: SH
  14. Install the seat belt bezel to the seat back.

  15. Object Number: 753728  Size: SH
  16. Install the seat back bezel push pins.

  17. Object Number: 753723  Size: SH
  18. Install the rear seat belt anchor to the seat belt buckle bracket with the nut.
  19. Tighten
    Tighten the rear seat belt anchor nut to 50 N·m (37 lb ft).

  20. Install the rear seat back assembly. Refer to Rear Seat Number 1 Back Replacement in Seats.

Seat Belt Retractor Replacement - No. 1 Center Rear TrailBlazer EXT, Envoy XL, Envoy XUV

Removal Procedure


    Object Number: 828140  Size: SH
  1. Remove the 3 screws securing the inboard rear seat back cushion latch cover.

  2. Object Number: 828141  Size: SH
  3. Remove the rear seat belt anchor nut (2) securing the seat belt (1) to the seat frame.
  4. Pull the seat back cover and pad up to expose the seat belt bracket bolts. Refer to Rear Seat Back Cushion Cover and Pad Replacement .

  5. Object Number: 828222  Size: SH
  6. Remove the 2 bolts (2) securing the seat belt bracket (1) to the seat back frame.

  7. Object Number: 828220  Size: SH
  8. Remove the nut (1) securing the retractor assembly (2) to the seat back frame.
  9. Remove the retractor assembly.

Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 828220  Size: SH
  1. Install the nut (1) securing the retractor assembly (2) to the seat back frame.
  2. Tighten
    Tighten the center seat belt retractor mounting nut to 55 N·m (40 lb ft).


    Object Number: 828222  Size: SH
  3. Install the seat belt bracket (1) to the seat back frame with the 2 bolts (2).
  4. Tighten
    Tighten the rear seat belt bracket mounting bolts to 35 N·m (26 lb ft).

  5. Install the seat back cover and pad to the seat back. Refer to Rear Seat Back Cushion Cover and Pad Replacement .

  6. Object Number: 828234  Size: SH
  7. Install the seat belt (1) to the seat frame with the rear seat belt anchor nut (2).
  8. Tighten
    Tighten all rear center seat belt anchor nut to 60 N·m (44 lb ft).


    Object Number: 828140  Size: SH
  9. Install the inboard rear seat back cushion hinge cover with 3 screws.
  10. Tighten
    Tighten the rear seat back cushion hinge cover screws to 2 N·m (18 lb in).