It is quite simple to replace the turn signal switch on your 1990 Buick LeSabre. The turn signal switch simply plugs in and out.
How do you replace the front turn signal bulb located on a 2001 Buick Century?"
There is a very good step-by-step at this site: http://tss.likeabigdog.com/
history of colour
replace the combination switch on the turn signal stalk
The 1992 Buick Roadmaster signal flasher relay switch can be found beneath the drivers side dashboard. The signal flasher relay switch will be above the gas pedal.
Replace ignition switch for 1993 buick century?
Bulbs or turn signal flasher, maybe even the switch.
how to replace window toggle switch 1999 buick century
No it is under the dash normally located near the fuse panel.
Replace the light bulb, if you've already tried that, then the switch is bad.
where is the fuel pump switch located for a 1992 buick lasabre