Installation Procedure

Important:  Apply thread locker GM P/N 12345382 to all bolt threads prior to assembly.

1. Install the front gaskets, and the rear gaskets (5) to the assist step.
2. Install the front brackets, and the rear brackets (4) to the assist step.
   NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
3. Install the following components to the front assist step bracket, and the rear assist step bracket:
   1. 3.1. The washers (3)
   2. 3.2. The lock washers (2)
   3. 3.3. The bolts (1)

      Tighten 

      Torque the bolts to 90 N.m (66 lb ft).

      Fig 1: Installing Front Brackets And Rear Brackets

      Courtesy of GENERAL MOTORS CORP.
4. Install the lower body-mount cushion assemblies (4), front and rear, to the vehicle.
5. With an assistant, raise the assist step to the vehicle.
6. With an assistant, install the following front components, and rear components:
   1. 6.1. The washers (3)
   2. 6.2. The lock washers (2)
   3. 6.3. The body mount bolts (1)

      Tighten 

      Torque the bolts to 90 N.m (66 lb ft).

      Fig 2: Installing Lower Body-Mount Cushion Assemblies

      Courtesy of GENERAL MOTORS CORP.
7. Install (5) the assist step center bracket.
8. Install (2) the following components to the assist step:
   1. 8.1. The washer
   2. 8.2. The lock washer
   3. 8.3. The center bolt

      Tighten 

      Torque to 45 N.m (33 lb ft).

9. Install (1) the following components to the assist step:
   1. 9.1. The washer
   2. 9.2. The lock washer
   3. 9.3. The center body mount bolt

      Tighten 

      Torque to 90 N.m (66 lb ft).

      Fig 3: Installing Assist Step Center Bracket

      Courtesy of GENERAL MOTORS CORP.