Installation Procedure
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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Partially close the rear door.
- Push the rear door outer extension panel (1) onto the rear door.
 Courtesy of GENERAL MOTORS COMPANY
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Rear Door Outer Extension Panel Bolt (1) - Install and tighten[3x]1.9N.m (17 lb in)
- Close the rear door.