GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Raise the vehicle to a suitable height.
  2. Important: The assist step does not have to be removed to replace the assist step support bracket.


    Object Number: 350679  Size: SH
  3. Remove the nuts that attach the assist step plate to the assist step support bracket.

  4. Object Number: 350685  Size: SH
  5. Remove the nuts and bolts (1) that attach the assist step brace to the assist step support bracket.

  6. Object Number: 394776  Size: SH
  7. Remove the nuts and bolts that attach the rear assist step support bracket to the in rocker panel.
  8. Remove the assist step support bracket from the vehicle.

  9. Object Number: 350698  Size: SH
  10. Remove the nuts and bolts from the rear anchor that attach to the inner pinchwell flange and to the inner rocker panel.
  11. Remove the rear anchor from the vehicle.

Installation Procedure


    Object Number: 350698  Size: SH
  1. Install the rear anchor to the vehicle.
  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.

  3. Install the nuts and bolts to the rear anchor that attaches to the inner pinchwell flange and to the inner rocker panel.
  4. Tighten
    Tighten the nuts and bolts to the rear anchor that attaches to the inner pinchwell flange and to the inner rocker panel to 25 N·m (18 lb ft).


    Object Number: 394776  Size: SH
  5. Install the assist step support bracket to the vehicle.
  6. Install the nuts and bolts that attach the rear assist step support bracket to the inner rocker panel.
  7. Tighten
    Tighten the nuts and bolts that attach the rear assist step support bracket to the inner rocker panel to 25 N·m (18 lb ft).


    Object Number: 350685  Size: SH
  8. Install the nuts and bolts (1) that attach the assist step brace to the assist step support bracket.
  9. Tighten
    Tighten the nuts and bolts (1) that attach the assist step brace to the assist step support bracket to 10 N·m (89 lb in).


    Object Number: 350679  Size: SH
  10. Install the nuts and bolts that attach the assist step plate to the assist step support bracket.
  11. Tighten
    Tighten the nuts and bolts that attach the assist step plate to the assist step support bracket to 10 N·m (89 lb in).

  12. Lower the vehicle.