Im trying to remove the power window motor on the passenger side of my 1991 ford f150 and i was wondering how to remove the motor...i have taken out the two bolts you can get to on the motor but there is one behind the door frame that i cant seem to get anywhere on. Anyone know how to remove these motors

 

Drill a hole in the metal to get the last bolt. On some models they put a dimple where you need to drill.