GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2000 🢒 Safari - 2WD 🢒 Body and Accessories 🢒 Frame and Underbody 🢒 Assist Step Support Bracket Replacement

Removal Procedure
  1. Raise the vehicle to a suitable height.

    2. Important: The assist step assembly does not have to be removed to replace the assist step support bracket.


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

    3. Object Number: 350689 Size: SH
  3. The assist step support brackets are to be numbered 1 through 5 in the order when removing.

    4. Object Number: 350685 Size: SH
  4. Remove the nuts and bolts (1) that attach the assist step plate to the assist step bracket.
  5. Remove the bolts (2) that attach the assist step plate to the assist step support bracket to the underbody.
  6. Remove the assist step support bracket from the vehicle.

Installation Procedure

    Object Number: 350689 Size: SH
  1. Install the assist step support bracket to the vehicle.
  2. Install the assist step support brackets 1 through 5 in the order which they were removed.

    3. Object Number: 350685 Size: SH

    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 bolts (2) that attach the assist step plate to the assist step support bracket to the underbody.

    4. Tighten
    Tighten the bolts (2) that attach the assist step plate to the assist step support bracket to the underbody to 25 N·m (18 lb ft).

  4. Install the nuts and bolts (1) that attach the assist step brace to the assist step bracket

    5. Tighten
    Tighten the nuts and bolts (1) that attach the assist step brace to the assist step bracket to 10 N·m (89 lb in).


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

    6. Tighten
    Tighten the nuts that attach the assist step plate to the assist step support bracket to 10 N·m (89 lb in).

  6. Lower the vehicle.