Drivers window wont go down motor is still working

You need a new window regulator with motor already installed on it, remove the door panel, handles, wiring harnesses, then there should be four to six screws holding in the regulatorblock the glass all the way to the top and remove regulator, then install the new one back into the door in the reverse order. once it's in connect the switch and watch the glass go in motion adjust as needed to make a good seal in the frame. once done, put panel back in placce with wiring, handles. put plastic cover inside door panel back in place or the road noise will be bad and you;ll have to take it all apart again. Should be able to get a new one from a salvage yard for around $100.00 to $150.00. dealerships get $325.00 plus just for the part.