Windows and door lock problems

Look in the harness between the door and frame for broke wiring in the drivers door. You will have to slide back rubber boot it is common for wiring to break there since it is always flexing. All your switches run thru the master switch so start here

You may also have a bad connection to the module or blown fuse. You can try re-synchronizing the system. Complete the following steps in order to re-synchronize the transmitter with the receiver:

1. Press the LOCK and the UNLOCK buttons on the transmitter simultaneously for 7 seconds.
2. The receiver will acknowledge re-synchronization in the following manner:
   • If all of the doors are locked, the receiver will unlock and lock all of the doors except the driver door.
   • If all of the doors are unlocked, the receiver will lock all of the doors.

Here are step-by-step instructions on how to change your window regulator. My model is specifically a 2004 Jeep Grand Cherokee Laredo. 1999-2000 models are compatible and the 2001-2004 are compatible.Make sure you get your right Jeep vehicle year because the regulator/motors change
Tools needed for the job:
New regulator

Needle-nose pliers

Socket wrench: 10mm, and 1/4 sockets

Screwdriver (phillips, flat, and medium-sized torx bits)

some rags
STEPS:
1. To take off the door panel. You will find 3 screws. One in the armrest, one behind a plastic cover near the sideview mirror, and a torx screw underneath the door handle - just pry it up like you're opening the door and unscrew.
2. Use your long flathead screwdriver or other similar tool to carefully pry the plastic panel away from the door frame. Careful you don't break it. There are a bunch of plastic clips that attach it - you will break some of these so don't freak out. Worst case you can always order some replacements for cheap.
3. Now disconnect everything attached to the panel: power window cable, mirror cable, and door and lock controls. Once you get all the cables disconnected, look for the tiny plastic clasps over the cover of the metal rods for the door and lock mechanisms. Gently push up and turn the plastic rings slightly to the side and the rods should pull straight up.
4. Remove the speaker (4 screws and a connector plug).
5. Remove the vapor barrier. This is just a giant black plastic cover that sits between the door and the plastic panel. Ease it off and try to keep all the black adhesive attached so you can reuse it to reattach it later. For me this worked better if I pulled fairly hard.
6. Pull out the interior rubber seal/guard that sits in the bottom window groove - just pry it up and pull it out. Leave the one on the outside of the car alone. You may have a piece of foam at each end like I did - if so, make sure you keep them.
7. Look inside the hole to find the regulator. Probably easier to see if the window is down at this point. Notice the two nobs from the window that attach to the regulator, there is a metal clip holding it to the plastic receiver. Pull out the pin on both sides.
8. Carefully dislodge the window from the plastic nobs. Once you do this, nothing will be holding the window.You can hold up the window with some masking tape.Cut a piece about 6inches long.Stick one end of tape to window then go over window frame and place other side of tape on other side of window
9. With the window decoupled from the regulator, it's time to maneuver it out. With it inside the door, turn it almost upside down so the bottom of the window comes out the top first. Otherwise you won't be able to remove it from the door. Be careful - you don't want to break it!
10. Disconnect the plug attaching the power/controls to the window motor.
11. Remove the 4 screws holding the regulator onto the door. (The upper left one should just be loosened so it will hang-in-place). Do the same for the motor (3 screws).
12. Now dislodge the entire regulator/motor assembly from the screw holes and tilt it sideways inside the door. Slowly maneuver it to the hole below the speaker and pull the assembly out.
13. Remove the 3 screws on the motor connecting it to the regulator.
14. Line up the new regulator the same way the old one was connected.It should align perfectly with no problem.
15. Install everything in the reverse order.
Things to remember!!!
When reattaching the plastic panel, it will work better if you take out all the plastic clasps that are stuck in the metal part of the door and insert them in their proper place in the plastic panel. That way you can bang the panel onto the door and they will lock in place in the holes of the door frame.
Once you get the new motor/regulator assembly back in, you can grab your door panel, hold it nearby, connect the power cables and test it before putting the window back in and reconnecting everything. The window should go up/down with no problem.
When you get the window back in, don't forget to reinstall the pins that hold's the window in place
Good luck! And pat yourself on the back for a job well done.