This happened to me. When my turn signal lights went out or would stay solid where I would have to manually make them blink it eventually made my break lights go out, but they would come on when I held the turn signal switch for high beams. To repair the issue you will need to get the whole turn signal switch fixed which is behind the horn and the airbag. Nice penny and it takes about 2-2 1/2 hours to repair it because there are wires behind your steering wheel that go to different things.
Trun signal lights do not come on at all not on dash or outside
Most likely it is either the brake light switch, under the dashboard, connected to the brake pedal or the turn signal switch inside the steering column.
IF one of your brake light or turn signal light bulbs are put in incorrectly - IT will backfeed into the computer & KILL the Engine.OR shorted 2 ground.
Take old lights out. Put new lights in. Done. You have just changed the interior lights on a 97 Buick Regal!
flasher has gone bad and needs replacing.
?need to replace the cable to a 1979 buick regal, the emergency release mechanism wire broke. Don't know how to release the brake?
Probably your emergency brake pedal. Try lifting up on your e brake pedal and see if id goes out.
Get a rock
Maybe a fuse or relay burned out sounds like a bad multifunction switch, very common issue with older gm's in the 90s. Believe it or not gm wired the brake lights to be powered off the multi-function switch assembly in the steering column
On my 1990 Buick Regal, I need an 18mm wrench , a 10mm wrench, screwdriver, jack, and a can of brake cleaner
pull it toward you rather than pushing it forward
I had the same problem with my 98 buick regal gs and it turned out to be the ignition switch.