GM Service Manual Online
For 1990-2009 cars only

Assist Step Support Bracket Replacement Diamond Edition

Removal Procedure


    Object Number: 643464  Size: SH
  1. Remove the assist step assembly.
  2. Remove the 3 mounting brackets.
  3. 2.1. Remove 2 nuts from the U-bolt of each bracket.
    2.2. Remove the bracket.

Installation Procedure

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.


    Object Number: 643464  Size: SH
  1. Install the 3 mounting brackets if required.
  2. 1.1. Install the U-bolt into the frame.
    1.2. Install the bracket with 2 nuts.

    Tighten
    Tighten the bracket nuts to 35 N·m (26 lb ft).

  3. Install the assist step assembly to the mounting brackets.