GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1998 🢒 GMC Suburban - 2WD 🢒 Body and Accessories 🢒 Seats 🢒 Driver or Passenger Seat Back Cushion Frame Replacement

Driver or Passenger Seat Back Cushion Frame Replacement Bucket

Removal Procedure
  1. Remove the seat from the riser. Refer to Seat Riser Replacement .

    2. Object Number: 300285 Size: SH
  2. Remove the headrest (1) and the guides (2). Refer to Front Seat Head Restraint Replacement .
  3. Remove the seat back pad (12). Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .

    4. Important: Note the position and the length of the bolts removed.

  4. Remove the 2 bolts retaining the seat back hinge to the seat back frame (13).
  5. Remove the 2 bolts retaining the seat back recliner to the seat back frame.

    6. Important: Complete the following steps ONLY if the seat is equipped with a lumbar support.

    1. Remove the seat cushion pad. Refer to Seat Cushion Trim Cover and Pad Replacement .
    2. Remove the 2 screws retaining the lumbar cable assembly to the seat cushion frame.
    3. Turn the threaded black end of the assembly in order to expose the retaining slot for the cable.
    4. Remove the cable from the assembly.

  6. Remove the seat back frame (13) from the seat assembly.

Installation Procedure

    Object Number: 300285 Size: SH

    Important: Complete the following steps ONLY if the seat is equipped with a lumbar support.

       • Insert the lumbar adjuster cable into the slot in the assembly. Turn the threaded black end of the assembly until the slot retaining the cable is concealed.
       • Install the 2 screws retaining the lumbar cable assembly to the seat cushion frame.
       • Install the seat cushion pad. Refer to Seat Cushion Trim Cover and Pad Replacement .

  1. Install the seat back frame (13) to the seat assembly.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: Install the bolts to the original locations.

  2. Install the 2 bolts retaining the seat back recliner to the seat back frame (13).

    3. Tighten
    Tighten the bolts to 30 N·m (22 lb ft).

  3. Install the seat back pad (12). Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  4. Install the headrest (1) and the guides (2). Refer to Front Seat Head Restraint Replacement .
  5. Install the seat to the riser. Refer to Seat Riser Replacement .

Driver or Passenger Seat Back Cushion Frame Replacement Split Bench

Removal Procedure

    Object Number: 300285 Size: SH
  1. Remove the seat from the riser. Refer to Seat Riser Replacement .
  2. Remove the headrest and guides. Refer to Front Seat Head Restraint Replacement .
  3. Remove the seat back pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .

    4. Important: Note the position and the length of the bolts removed.

  4. Remove the 2 bolts retaining the seat back hinge to the seat back frame (13).

    5. Important: Note the position and the length of the bolts removed.

  5. Remove the 2 bolts retaining the seat back recliner to the seat back frame (13).

    6. Important: Complete the following steps ONLY if the seat is equipped with a lumbar support.

       • Remove the seat cushion pad (12). Refer to Seat Cushion Trim Cover and Pad Replacement .
       • Remove the 2 screws retaining the lumbar cable assembly to the seat cushion frame.
       • Turn the threaded black end of the assembly to expose the retaining slot for the cable.
       • Remove the cable from the assembly.

  6. Remove the seat back frame (13) from the seat assembly.

Installation Procedure

    Object Number: 300285 Size: SH

    Important: Complete the following steps ONLY if the seat is equipped with a lumbar support.

       • Insert the lumbar adjuster cable into the slot in the assembly.
       • Turn the threaded black end of the assembly until the slot retaining the cable is concealed.
       • Install the 2 screws retaining the lumbar cable assembly to the seat cushion frame.
       • Install the seat cushion pad. Refer to Seat Cushion Trim Cover and Pad Replacement .

  1. Install the seat back frame (13) to the seat assembly.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: Install the bolts in the original locations.

  2. Install the 2 bolts retaining the seat back recliner to the seat back frame.

    3. Tighten
    Tighten the bolts to 30 N·m (22 lb ft).

    Important: Install the bolts in the original locations.

  3. Install the 2 bolts retaining the seat back hinge to the seat back frame.

    4. Tighten
    Tighten the bolts to 30 N·m (22 lb ft).

  4. Install the seat back pad. Refer to Front Seat Back Cushion Cover and Cushion Pad Replacement .
  5. Install the headrest and guides. Refer to Front Seat Head Restraint Replacement .
  6. Install the seat to the riser. Refer to Seat Riser Replacement .

Driver or Passenger Seat Back Cushion Frame Replacement Bench Seat

Removal Procedure
  1. Remove the seat retaining bolts and tilt rearward.
  2. Release the springs from the bottom of the seat adjuster.

    3. Object Number: 300285 Size: SH
  3. Remove the headrest (1) from the seat back. Refer to Front Seat Head Restraint Replacement .
  4. Unzip the zipper.
  5. Squeeze the tabs and remove the headrest guides.
  6. Remove the bolts and trim from the sides of the seat.
  7. Remove the seat back from the seat frame.
  8. Remove the seat back cover from the seat back frame (13).
  9. Remove the foam pad (12) from the seat back.

Installation Procedure

    Object Number: 300285 Size: SH
  1. Install the foam pad to the seat back.
  2. Install the seat back cover to the seat back frame (13).
  3. Install the seat back to the seat frame.
  4. Install the bolts and trim to the sides of the seat.

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Important: Install the seat retaining bolts.

    Tighten
    Tighten the bolts to 55 N·m (41 lb ft).

  5. Install the headrest guides (2).
  6. Zip the zipper.
  7. Install the headrest (1) to the seat back. Refer to Front Seat Head Restraint Replacement .
  8. Install the springs to the bottom of the seat adjuster.