I suspect that you have "missed" at least TWO screws. Normally, there are more than two screws [the ones you did remove] that hold a tail light assembly in place.
The reason I suspect that there are at least two more screws is that IF there were only one, the assembly would "not budge" as you state, but instead would not come out but would be somewhat loose anyway.
I recently replaced my front and rear lights with led's. If the removal of the taillights is the same all you have to do is lower your tailgate and remove the 2 screws holding on the lights. pulling out the lights i had to use a screwdriver to work them out.
There are two screws on each side holding the light pods. Unscrew the screws and lift out the pod, remove the bulb by undoing the screws inside holding the pod together...get bulb out by twisting from socket.
This can be done 2 ways: 1 remove the turn signal lights and remove the 3 screws holding on the lights or 2 jack up the car and remove the 3 screws from the bottom, these are at the back of the lights.
it's under the dash on passenger side secured with 4 screws. disconnect the harness as well before removal.
Drop the tailgate, access the screws to remove the taillight assembly. Remove the screws holding the circuit board to the assembly, pull the board and you will have access to the bulbs.
open rear doors ,on left and right side there are screws holding the light fixture in,once they are removed the lights will come out and that will expose the bulb rack on the back,two screws hold that in and there you will find the bulbs........247365
One is on the bottom of the laptop directly in the middle secured by one screw and RAM clips. The other is below the keyboard which is secured by three screws on the bottom of the laptop, clips holding the keyboard, then the usual RAM chip clips on either side.
Remove the clear lenses from the overhead lights near rearview mirror. Use a torx driver to remove two small screws holding bezel in place. Remove bezel. Now you can access the the two torx screws holding mirror.
EAsy , remove distributor cap then loosen two screws holding rotor down and pull it off . reassembly is reverse of removal
Disconnect the four plastic screws holding the plastic plate in the back of the trunk. This exposes the tail and brake lights.
Remove carpet/floor covering Then there should be screws holding the rubber boot covering the shifter Remove screws to remove boot Shifter should be secured to transmission by bolts after removal shifter should be able to be lifted from transmission Then you can possibly see problem. Perhaps fork has just slipped from shifter
The 2002 Jeep Grand Cherokee glovebox is secured with a retaining screws. There are four retaining screws on the top and for retaining screws on the bottom of the glovebox. Remove the retaining screws to remove the glovebox.