Sierra 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
3. Install assist step bracket nuts (2).
Torque the bolts to 50 N.m (37 lb ft)
4. Install the lower body-mount cushion assemblies (2) to the vehicle.
5. With an assistant, raise the assist step to the vehicle.
6. With an assistant, install the following:
1. The washers
2. The body mount bolts (1)
Torque bolts to 90 N.m (66 lb ft)