Dual-Pane Panoramic System (Sales Code GWJ) Components
Replacing the overhead glass on this vehicle involves handling two distinct sections: an active front tilt-and-slide panel and a stationary rear lite. Jeep packages this layout under sales code GWJ, offering it as an option or standard equipment on the Latitude, Limited, Trailhawk, and High Altitude trims. Unlike simpler single-pane pop-ups, this dual-pane assembly spans almost the entire roof line between the side ditch mouldings, sitting directly above a motorized, rollable fabric interior sunshade.
Neither the front movable panel nor the rear stationary unit houses electronic modules like rain sensors, radio antennas, or defroster lines. However, each arrives with factory-bonded edge encapsulation and surrounding rubber weatherstripping. Because these perimeter seals are integrated straight onto the glass edge during production, tearing or dry-rot on an aged seal usually means swapping out the entire glass slab rather than replacing just a strip of rubber.
| Panel Location | Mopar Part Number | Operation Type | Direct Hardware Attachments |
|---|---|---|---|
| Front Movable Glass | 68289868AC | Power tilt/slide | Track guide brackets, perimeter seal |
| Rear Fixed Glass | 68289871AC | Stationary | Fixed cassette mounting frame, perimeter seal |
Mechanical Drive Tracks, Wind Deflectors, and Leak Points
When the front panel moves, it relies on a dedicated electric motor pulling dual drive cables down side guide tracks. Right at the leading edge, a pop-up mesh wind deflector deploys mechanically as the glass slides back. If road grit or pine needles bypass the outer perimeter seal, they settle into these track guides. This debris causes the front panel to drag, pop loudly over uneven road surfaces, or bind completely mid-travel, putting heavy strain on the drive cables.
Water management relies on a catch tray within the cassette paired with four corner drain tubes. Two run forward down the A-pillars, while two exit through the C/D-pillars. When tree sap or dust plugs these openings, water spills over the internal cassette lip and soaks into the headliner trim, eventually dripping through the overhead dome lights and pooling into the footwells. Whenever I come to your home or workplace across the Greater Toronto Area to swap out shattered or leaking roof glass, I make sure these cassette channels and drain exits are fully cleared before securing the new pane.
Addressing Seal Degradation and Panel Alignment
The exterior rubber gaskets on these panels are heavily exposed to weather, frequently showing shrinkage and cracking after years of sun exposure. Because Mopar updated the factory part numbers from the early AA and AB suffixes up to 68289868AC for the front and 68289871AC for the rear, matching the correct revision ensures the glass fits flush with the vehicle roofline. Misalignment between the front moving panel and the rear fixed glass disrupts airflow, causing high-pitched wind whistle at highway speeds and allowing standing water to overpower the internal cassette channels.
