GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2004 🢒 Sunfire 🢒 Restraints 🢒 SIR 🢒 Front Seat Back Replacement

Removal Procedure

    Object Number: 278885 Size: SH

    Caution: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling . Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

  1. Disable the SIR system, if equipped with side impact air bag (SIAB). Refer to SIR Disabling and Enabling or to SIR Disabling and Enabling in SIR.
  2. Remove the front bucket seat. Refer to Seat Replacement .
  3. With a flat-bladed tool remove the lumbar knob from the actuator, if equipped.
  4. Remove the lumbar actuator from the cushion frame, if equipped. Refer to Front Seat Lumbar Support Replacement .
  5. Unfasten the lumbar cable from the cushion frame, if equipped.
  6. Unfasten the wire harness from the cushion frame for the SIAB, if equipped.
  7. Remove the outer trim panel from the seat cushion. Refer to Seat Cushion Outer Trim Panel Replacement .
  8. Remove the front bucket seat recliner bolts (6).
  9. Remove the front bucket seat back pivot bolt (3).
  10. Remove the front bucket seat back (1) from the front seat cushion (5).

Installation Procedure

    Object Number: 278885 Size: SH
  1. Install the front seat back (1) to the front seat cushion (5).

    2. Notice: Refer to Fastener Notice in the Preface section.

  2. Install the front bucket seat back pivot bolt (3).

    3. Tighten
    Tighten the pivot bolt to 20 N·m (15 lb ft).

  3. Install the front bucket seat recliner bolts.

    4. Tighten
    Tighten the bolts to 20 N·m (15 lb ft).

  4. Install the outer trim panel on the seat cushion. Refer to Seat Cushion Outer Trim Panel Replacement .
  5. Fasten the wire harness to the cushion frame for the SIAB, if equipped.
  6. Fasten the lumbar cable to the cushion frame, if equipped.
  7. Install the lumbar actuator to the cushion frame, if equipped. Refer to Front Seat Lumbar Support Replacement .
  8. Align the lumbar knob to the splines on the actuator, if equipped.

    9. Press the knob onto the actuator until fully engaged.

  9. Install the front seat. Refer to Seat Replacement .
  10. Enable the SIR system, if equipped with SIAB. Refer to SIR Disabling and Enabling or to SIR Disabling and Enabling in SIR.