Tried it today and none of the windows work from master switch on drivers side except ft passenger window, which went down but will not go back up.

Switches could be faulty try replacing them.

If all other switches work then I would say it's your master switch but if not then you have a electrical problem.

was regulator bad? did it work from drivers side switch before you did regulator repair?..if so passenger side switch wiring has issue and is not sending signal through it back to the drivers side master switches.. otherwise you need to pin test for power up power down on drivers side switch and repair that if issue going to the window on passenger side.. (possible pinched at door jam area common)

Need to get a wiring diagram. Buy a book and follow the wiring schematic. It should help you out majorly. Can't really work on electrical issues without one.

First, check all fuses to make sure that none are blown.

If the door lock switch works on the passenger side, then the drivers side door lock switch is probably faulty. Use a multi-meter to test the Drivers Side Door Lock Switch (Black and Pink/Light Green wires unlock the vehicle, and the Black and Pink/Yellow wires lock the vehicle)
If the switch is tested and found to be operating properly, you may have a faulty Body Security Module or Drivers Side Door Lock Actuator.

If neither of your Power Mirrors are working, you probably have a faulty Exterior Rear View Mirror Switch, Power Mirror Module, or blown Central Junction Box Fuse.

If none of your Power Windows are working, you probably have a faulty Accessory Delay Relay or a blown fuse in your Central Junction Box or a faulty Master Window Adjust Switch (all of the Power Window Switches feed through this Master Window Switch). If the Power Windows didn't stop working at the same time, you may have faulty Window Adjust Switches, or faulty Power Window Motors, this is very unlikely though. It would also be a good idea to inspect the wiring for any obvious damage.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

The lock switch is designed to keep the passenger buttons from being used. It should not stop the master switch from operating the windows - or at least, that's what the 2003 Buick Century Owner's Manual says.

After studying the schematics for your vehicle, Iwould say that the owner's manual is correct. The lockout switch only cuts power to the passenger switches. The driver's (master) switch can still power the passenger windows. If none of the passenger windows work from either the driver's door switch or the passenger switches, then the master switch probably has an internal open circuit causing this. There is no separate relay or fuse. I would replace the master switch. Be sure and check ALL switches with the lock on and the lock off to verify this before replacing anything.

Pinched wire between door jam and switch console

could be the driver side master window switch... if the driver side window switch assembly is broken then the windows will not work... try using a test light to see if you got power to the with and and ohm meter to check all four switches on the drivers side

No.The drivers master power switch is probably bad.YOu will have to perform a test on the three other switches on the master. Check for power and ground when you push each putton.If the master switch fails the test you need a new master switch.

check and see if the window lock feature is flipped on. its located on driver door panel. this will preven the windows from working except from driver control.