This could just be dust build up on the motor. first i would buy a can of computer cleaner (pressurised air), take off the door panel and try cleaning it off. the door panel should be able to be removed with a screw driver
how to replace window toggle switch 1999 buick century
No
safe lite repair safe lite replace
replace heater core on 92 buick century
Replace ignition switch for 1993 buick century?
Replace window regulator.
where is the fuse for the power window on 1996 buick century
how to replace the tether gas cap on a 1998 Buick Century?
There are a couple of reasons why the window won't go back up on a 1996 Buick Century. The window may be off track or the window motor has stopped working.
you need to replace the regulator. dealership is the only one that has it about $170.00
How do you replace the front turn signal bulb located on a 2001 Buick Century?"
The 1990 Buick Century has a timing chain and not a belt. No replacement is necessary.