Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 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 to all bolt threads prior to assembly.

Install the front gaskets, and the rear gaskets (5) to the assist step.
Install the front brackets, and the rear brackets (4) to the assist step.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the following components to the front assist step bracket, and the rear assist step bracket:
1. The washers (3)
2. The lock washers (2)
3. The bolts (1)
  Tighten: Torque the bolts to 90 N.m (66 lb ft).
Install the lower body-mount cushion assemblies (4), front and rear, to the vehicle.
With an assistant, raise the assist step to the vehicle.
With an assistant, install the following front components, and rear components:
1. The washers (3)
2. The lock washers (2)
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.

Install (5) the assist step center bracket.
Install (2) the following components to the assist step:
1. The washer
2. The lock washer
3. The center bolt
  Tighten: Torque to 45 N.m (33 lb ft).
Install (1) the following components to the assist step:
1. The washer
2. The lock washer
3. The center body mount bolt
  Tighten: Torque to 90 N.m (66 lb ft).