The Front Door Glass Split on WK Grand Cherokees
Ordering side glass for this vehicle requires checking your build date, because the front door glass changed mounting designs early in the production run. For early 2005 production models, the front side glass uses NAGS numbers DD10787 for the right front and DD10788 for the left front, corresponding to original dealer part numbers 55394254AB and 55394255AB. From late 2005 through the 2010 model year, the factory revised the regulator carrier clamps and the lower glass notches, shifting production to NAGS DD11131 for the passenger side and DD11132 for the driver side (dealer numbers 55394254AC and 55394255AC). If you attempt to seat a 2006–2010 pane into an early 2005 regulator, the bottom-mounted plastic snap-in carrier clips will not lock into place.
Unlike the liftgate or windshield, the movable door glass on this platform carries no wire harnesses, heating elements, or rain-sensing hardware. What it does require is precise alignment within the fully framed steel door shell. The front doors use solar green tint (GTNN) tempered glass, held steady by inner and outer beltline weatherstrips and an internal run channel.
Regulator Failures, Run Channel Binding, and Rear Door Glass
A frequent problem on these doors involves the cable-and-pulley scissor regulator mounted to the steel door plate. The plastic cable spool reels and lower carrier tabs tend to become brittle and snap, dropping the glass into the bottom of the door cavity without warning. Furthermore, Chrysler issued TSB #23-013-06 to address front door windows that chatter, moan, or automatically reverse direction when using the one-touch express-up feature. That issue stems from the glass binding against a distorted run channel weatherstrip, which triggers the motor's anti-pinch sensor. When I head out to replace shattered or detached door glass, I generally pull up to your driveway roughly an hour after your booking is confirmed, ready to clear out the broken fragments inside the door frame and seat the new aftermarket unit properly into the regulator guides.
For the rear passenger doors, the drop glass is uniform across the entire 2005 to 2010 run. These rear panes carry NAGS numbers DD10789 for the right rear and DD10790 for the left rear (dealer references 55396878AB and 55396879AD). Unlike the front doors, the rear door drop glass comes with dark factory privacy tint and slides vertically alongside a rigid division bar that separates the rolling pane from the stationary rear quarter glass.
| Door Location | Model Years | NAGS Number | Tint Style |
|---|---|---|---|
| Right Front (Passenger) | Early 2005 | DD10787 | Solar Green |
| Left Front (Driver) | Early 2005 | DD10788 | Solar Green |
| Right Front (Passenger) | 2006–2010 (and late 2005) | DD11131 | Solar Green |
| Left Front (Driver) | 2006–2010 (and late 2005) | DD11132 | Solar Green |
| Right Rear Passenger | 2005–2010 | DD10789 | Dark Privacy Tint |
| Left Rear Passenger | 2005–2010 | DD10790 | Dark Privacy Tint |
Why does my front window roll up halfway and then reverse back down?
This behavior is caused by the safety pinch-protection circuit in the 12V reversible power motor. If the glass meets resistance from a warped or pinched run channel weatherstrip—a known issue documented in TSB #23-013-06—the motor assumes an obstruction is present and forces the glass down to prevent injury.
Can I install a 2008 front door glass into an early 2005 door?
No, the lower mounting points do not match. The early 2005 front glass (DD10787 / DD10788) uses a different retention notch spacing than the updated 2006–2010 glass (DD11131 / DD11132). Installing the later glass into an early 2005 door requires swapping the regulator assembly to the updated carrier bracket style.
Is the rear passenger door glass tinted with aftermarket film?
No, the rear side drop glass uses dark sunscreen glass where the pigment is embedded directly into the tempered glass during manufacturing. It matches the stationary rear quarter vent glass without the risk of bubbling or peeling that comes with stick-on tint films.
