GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C Sierra - 2WD 🢒 Body and Accessories 🢒 Seats 🢒 Driver or Passenger Seat Cushion Frame Replacement

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

    2. Object Number: 378528 Size: SH
  2. Remove the seat trim panel. Refer to Front Seat Trim Panel Replacement .
  3. Remove the seat cushion trim cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement .

    4. Object Number: 407184 Size: SH
  4. Remove the following components from the seat cushion frame:
    5. 4.1. The frame springs (1)
    4.2. The frame suspension (2)
    4.3. The plastic retainers (3)
  5. Remove the seat cushion frame from the vehicle.

Installation Procedure

    Object Number: 407184 Size: SH
  1. Install the following components to the seat cushion frame:
    2. 1.1. The plastic retainers (3)
    1.2. The frame suspension (2)
    1.3. The frame springs (1)
  2. Install the seat cushion trim cover and pad. Refer to Seat Cushion Trim Cover and Pad Replacement .

    3. Object Number: 378528 Size: SH
  3. Install the seat trim panel. Refer to Front Seat Trim Panel Replacement .
  4. Install the seat into the vehicle. Refer to Front Seat Replacement - Bucket .