Installation Procedure
- Install the assist step brackets to the vehicle.
- Install the bolts (6) to the brackets and ensure that the brackets are seated securely to the inner rocker panel.
- Install the heater and A/C tubes retaining nuts to the studs, if equipped. Refer to Heater Pipe Replacement - Auxiliary in Heating, Ventilation, and Air Conditioning.
- With an assistant, install the assist step to the vehicle.
- Install the bolts (3,1) to the assist step bracket, and leave the bolts loose.
- Install the bottom fender bolt (2) and the washer to the vehicle.
- Tighten the assist step fasteners in the following sequence:
Tighten:
- Tighten the front fender bolt to 25 N.m (18 lb ft).
- Tighten the bracket bolt to 25 N.m (18 lb ft).
- Tighten the assist step bracket bolt (2) to 9 N.m (80 lb in).
- Tighten the assist step to the bracket bolt to 9 N.m (80 lb in).
- Install the assist step rear cover to the vehicle.
- Install the push-in retainer.
- Install the assist step front cover to the vehicle.
- Install the push-in retainer.
IMPORTANT:
Use the thread locker GM P/N 12345382 to all bolt threads prior to assembly.
NOTE:
Refer to Fastener Notice
in Cautions and Notices.