Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Important: Apply thread locker GM P/N 12345382 (Canadian P/N 10953489), to all bolt threads prior to assembly

Install assist step brackets.
Install the assist step bracket bolts (1).
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install assist step bracket nuts (2).
Tighten

Torque the bolts to 50 N.m (37 lb ft)

Fig 1: Installing Assist Step Bracket Bolts And Bolt
Courtesy of GENERAL MOTORS CORP.
Install the lower body-mount cushion assemblies (2) to the vehicle.
With an assistant, raise the assist step to the vehicle.
With an assistant, install the following:
1. 6.1. The washers
2. 6.2. The body mount bolts (1)
  Tighten
  
  Torque bolts to 90 N.m (66 lb ft)
  
  Fig 2: Installing Lower Body-Mount Cushion Assemblies
  Courtesy of GENERAL MOTORS CORP.