My passenger window will go down, but will only
go half way up. It sounds like it's caught on
something. What could be the problem?
Most likely the cable on the regulator is badly frayed and gets bound up in the drive. Only way to fix it is to replace the regulator assembly.
The motor rides on a set of gears, some are in the motor and some external of the motor. The door panel will need to be removed and inspected...
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