Seat Cushion Frame Replacement for GMC Truck TopKick C-Series (Conventional) C4/C5 2003

1. Remove the bucket seat from the vehicle. Refer to Bucket Seat Replacement .
2. Remove the seat cushion cover and pad. Refer to Front Seat Cushion Cover Replacement .



3. Remove the seat cushion hinge bolts from the seat frame.
4. Remove the seat cushion frame from the seat hinge.
5. Remove the riser from the seat cushion frame.

1. Install the riser to the seat cushion frame.
2. Install the seat cushion frame to the seat hinge.

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.

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

Tighten
Tighten the seat cushion hinge bolts to the seat frame to 30 N·m (22 lb ft).




4. Install the seat cushion cover and pad . Refer to Front Seat Cushion Cover Replacement .
5. Install the bucket seat in the vehicle. Refer to Bucket Seat Replacement .