The 2003 Pontiac Grand Am is a mid-size car that was made by General Motors. If the power windows are not working properly, it could be for a variety of reasons. The window could be stuck, the regulator could be off balance or the power window's motor may have a problem. Checking and replacing the regulator or the motor is something you should be able to do on your own.
Pry off the window panel using a flat-blade screwdriver. You may need to disconnect the panel from a wire connector with the screwdriver. Pry out the switch plate using a flat-blade screwdriver and a rag to protect the plastic. Then unscrew the screw inside the opening where the switch plate was by using a Phillips-head screwdriver. Unscrew the screw in the door handle, underneath the arm rest and behind the reflector at the bottom edge of the door using a Phillips-head screwdriver. Pry out the reflector to remove the screw.
Pry away the door panel with a putty knife and a rag. Work your way around the door panel to release the clips that hold the door panel to the door. Then lift up the door panel to release it from the door. You may need to disconnect any connectors behind the door panel to completely remove it from the door.
Check the regulator. Peel the water shield from the door. Unscrew any bolts that are holding the window in place. Pull the window all the way up in its roll up position and then tape it to the top of the door to keep it from falling back down.
Unscrew the bolts that hold up the power window's regulator with a socket and ratchet. There are five or six bolts around the door. Then pull out the pin on the metal plate that is in the middle of the door and its bolts. Lift the medal plate out of the door and then remove the regulator out of the door. While the window is taped up, use the automatic button to roll up the window a little for access to the bolt. Check to make sure that the regulator is working properly and that the window is moving up and down before reassembling all parts.
Detach the tape from the window carefully and slide it back down to the inside of the door. Do another test while the window is back in its position on the regulator. Make sure the window is working properly with the regulator while you press the automatic door button to roll it up and down. If the regulator is the problem, replace it. If not, check the window's motor and if necessary replace the motor.
Replace the power window motor on the regulator. Carefully unscrew the bolts that hold the motor in place by using a socket and ratchet. Make sure that you lay the motor on a flat surface when you remove it from its position. Once removed, replace it with a new motor. Once you're done checking your power window, reassemble all parts and you're done.
