Installation Procedure

WARNING: This page is about a different car, the 2020 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.

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Rear Window (2) - Install - Adhesive Installation of Rear Windows
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Slide the high mount stop lamp (1) into position.
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Ensure the mounting tabs on the top of the high mount stop lamp (1) are aligned with the slots on the rear of the roof structure (2).
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While holding in place, align the retaining tabs and secure the high mount stop lamp (1) with and forward upward motion.
Connect the electrical connector.
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CAUTION:
Refer to Fastener Caution .

High Mount Stop Lamp Bolt (1) - Install and tighten [ 2x ] - Fastener Specifications
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High Mount Stop Lamp Opening Cover (1) - Install
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Apply pressure upward on the high mount stop lamp cover (1) to engage the retaining tabs.
Ensure the retaining tabs have engaged and the high mount stop lamp cover (1) is fully seated to the headlining trim panel (2).
Connect the defrost tab electrical connectors.
Remove the tape.
Remove any remaining adhesive residue with a 50/50 mixture by volume of isopropyl alcohol and clean drinkable water. Wipe the surface dry with a clean lint-free towel.
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Connect the electrical connector.
Quarter Upper Trim Panel (3) - Install
Quarter Window Trim Finish Panel Bolt (2)Install and tighten - Fastener Specifications
Quarter Window Trim Finish Panel Bolt Cap - Install
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Install the lower rear seat belt retractor bolt (1) on the side of the trim panel being replaced. Fastener Specifications
Feed the rear seat belt retractor belt through the bezel opening in the quarter upper trim panel.
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Rear Seat Back Bolster (2) - Install
Rear Seat Back Bolster Nut (1) - Install and tighten - Fastener Specifications
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Slide the rear seat back bolster retainer lock (1) toward the front of the vehicle.
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Inspect each high retention retainer and sheet metal interface for flushness. Replace retainer as required if damage occurs during removal.
When installing new plastic retainers on the front of the seat, ONLY seat the retainer to the first click, otherwise the insertion force into the sheet metal will be greatly increased.
Rear Seat Cushion (1) - Install
Enable the SIR System. SIR Disabling and Enabling .