GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Chevy C Cab/Chassis HD (GMT 400) 🢒 Body 🢒 Seats 🢒 Seat Riser Replacement

Removal Procedure
  1. Remove the front seat assembly from the vehicle. Refer to Split Bench Seat Replacement or Front Seat Replacement - Bucket or Bench Seat Replacement .

    2. Object Number: 276776 Size: SH
  2. Remove the nuts retaining the seat riser (2) to the seat adjuster.
  3. Remove the front seat riser from the seat adjuster.

Installation Procedure

    Object Number: 276776 Size: SH
  1. Install the front seat riser (2) to the seat adjuster.

    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.

  2. Install the nuts to retain the seat riser to the seat adjuster.

    3. Tighten
    Tighten the nuts to retain the seat riser to the seat adjuster to 45 N·m (33 lb ft).

  3. Install the front assembly to the vehicle. Refer to Split Bench Seat Replacement or Front Seat Replacement - Bucket or Bench Seat Replacement .