Installation Procedure

Position the roof rail auxiliary weatherstrip push-in retainer to the first hole in the upper rear corner.
Press in the push-in retainer until fully seated.
Install roof rail auxiliary weatherstrip onto the flange.
Bending back the roof rail auxiliary weatherstrip onto itself to open the carrier while pushing forward will ease the installation effort.
Install the remaining push-in retainers to the rear pillar.

Fig 1: Installing Auxiliary Weatherstrip (1 Of 3)
Courtesy of GENERAL MOTORS CORP.
Install the center pillar auxiliary weatherstrip pressing in the push-in retainers until fully seated.

Fig 2: Installing Auxiliary Weatherstrip (2 Of 3)
Courtesy of GENERAL MOTORS CORP.
Align the C-pillar auxiliary weatherstrip top push-in retainers to the top hole in the rear pillar.
Install the C-pillar auxiliary weatherstrip working downward pressing in the remainder of the push-in retainers until fully seated.
Close the rear door.

Fig 3: Installing Auxiliary Weatherstrip (3 Of 3)
Courtesy of GENERAL MOTORS CORP.