Mazda CX-9 Grand Touring 2009 Manual page 1558

5. Press the rear sash molding in the direction of the arrow and install tabs A and D to the body.
CAUTION:
6. Press the rear sash molding from the vehicle front in the direction of the arrow and install tab C.
NOTE:
REAR SPOILER REMOVAL/INSTALLATION
1. Disconnect the negative battery cable.
2. Remove the liftgate upper trim. (See LIFTGATE UPPER TRIM REMOVAL/INSTALLATION .)
3. Disconnect the high-mount brake light connector.
4. Remove the nuts.
5. Detach the clips and remove the rear spoiler.
6. Install in the reverse order of removal.
2008 Mazda CX-9 Grand Touring
2008 ACCESSORIES & BODY, CAB Exterior Trim - Mazda CX-9
Do not press the rear sash molding in any place other than the
rubber areas.
After installing the front sash molding, verify that tabs B and C are
connected properly to the body.
Fig. 16: Identifying Double-Sided Adhesive Tape And Rear Sash
Molding
Courtesy of MAZDA MOTORS CORP.