2002 Buick Regal High Beams go out

sounds like headlight dimmer switch that switches between hi and low beams has failed

High beams are on by pulling the lever toward you temp mode to engage the high beams simply push the lever forward the high beams should engage then.

Faulty switch.

The high and low beam lights use the same power source, so if the low beams work the high beams have power.
There is a low and high beam relay controlled by the dimmer switch.
If the low beams work and the high beams don't, and the bulbs are good, check the dimmer switch and the high beam relay.

replace the light switch

It could be the low beam lights have gone bad. It is very possible for only the high beams to work, by themselves. If they won't turn on check fuses.

Did you check the fuse for the low beams? The high and low are on seperate circuits..
Good Luck...

that should be on your wiper arm just flick the whole handle back and you should hear a click and see the lights on your dash flicker showing high beam and flick again and should be your reg beams

where is the relay headlight switch located on a 1998 buick century

Most likely the multifunction switch is defective