Removal Procedure

Remove the screws from the front edge of the assist step extension. Open the door to expose the inner screw.

Fig 1: Removing Screws From Front Edge Of Assist Step Extension
Courtesy of GENERAL MOTORS CORP.
Remove the push clips from the front edge of the assist step extension.
Raise the vehicle to a suitable height.
Remove the nut from the front lower corner of the assist step extension.

Fig 2: Removing Nut From Front Lower Corner Of Assist Step Extension
Courtesy of GENERAL MOTORS CORP.
Remove the assist step pad nuts.
Remove the assist step pad.
1. 6.1. Insert a plastic tool along the edge.
2. 6.2. Pull upward on the assist step pad until it is fully released from the assist step plate.
  
  Fig 3: Removing Assist Step Pad
  Courtesy of GENERAL MOTORS CORP.
Remove the front section of the assist step extension as follows:
1. 7.1. Lift in the center of the assist step extension.
2. 7.2. Slide the front section forward.
3. 7.3. Lift upward on the assist step extension to release it from the retainer and assist plate.
  
  Fig 4: Removing Front Section Of Assist Step Extension
  Courtesy of GENERAL MOTORS CORP.
Remove the screws from the right rear inner and outer wheel well. Open the sliding door to expose the inner screw.

Fig 5: Removing Screws From Right Rear Inner And Outer Wheel Well
Courtesy of GENERAL MOTORS CORP.
Remove the screws from the rear outer edge of the assist step extension. If the vehicle is equipped with assist steps, the cladding is shorter on the left side (bottom edge).

Fig 6: Removing Screws From Rear Outer Edge Of Assist Step Extension
Courtesy of GENERAL MOTORS CORP.
Remove the rear section of the assist step extension, by lifting upward until fully released from the retainer.

Fig 7: Removing Rear Section Of Assist Step Extension
Courtesy of GENERAL MOTORS CORP.
Remove the nuts that attach the assist step plate to the assist step support bracket.

Fig 8: Removing Nuts Connecting Assist Step Plate To Assist Step Support Bracket
Courtesy of GENERAL MOTORS CORP.
Remove the bolt (1) from the assist step support brace.

Fig 9: Removing Bolt From Assist Step Support Brace
Courtesy of GENERAL MOTORS CORP.
The assist step support brackets are to be numbered (1, 2, 3, 4, 5) when removing.

Fig 10: Identifying Assist Step Support Brackets Removing Order
Courtesy of GENERAL MOTORS CORP.
Remove the bolts (2) from the underbody.
Remove the assist step support bracket.

Fig 11: Removing Assist Step Support Bracket Bolt
Courtesy of GENERAL MOTORS CORP.
Remove the nuts and bolts from the rear assist step support bracket.
Remove the rear assist step support bracket.

Fig 12: Removing Rear Assist Step Support Bracket Nut And Bolt
Courtesy of GENERAL MOTORS CORP.
Remove the nuts and bolts from the rear anchor that attaches to the inner pinchweld flange and to the inner rocker panel.

Fig 13: Removing Nuts And Bolts From Rear Anchor
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Do not use a sharp tool in the removal of the assist step retainer, it will damage the paint. Use a plastic tool to assist in the removal of the assist step retainer. The assist step retainer is held in place by a double backing tape.
Remove the screws from the assist step retainer. The right side is a one piece retainer, the left side is a two piece retainer.
Remove the assist step retainer from the rocker panel.

Fig 14: Removing Assist Step Retainer Screw
Courtesy of GENERAL MOTORS CORP.