1992 Buick Lasabre Right Brake Light

Check the brake light fuse. Check that one of the brake light fuse terminals has power at all times. Power for the brake lights goes from the fuse panel to the brake light switch, before the brake light wire goes into the steering column.

Easy just go under the steering wheel and look at the brake pedal right behing on the uper level is the switch you can removed

Try having someone watch ur lights as you tilt the steering wheel in different positions and pressing on the brake in each tilt position. Sounds strange but the brake light go through teh wiring in the steering column. I drive with my wheel tilted higher than normal to keep BOTH brake lights working.

NOPE IF ABS LIGHT IS ON AND YOUR BRAKES DONT FEEL RIGHT.HAVE IT TOWED.DONT DRIVE.

you have a ground fault somewhere, try cleaning all the ground leads look for corrosion and rust.

Yes! It is a faulty turn signal assembly. You can try actuating the hazards several times, to try cleaning the contacts but if there is no change then replace it. In case you want to know, the wires from the brake switch, go up into the turn-signal assembly then out to the tail-lights. To fix it, disconnect the battery, you will need some tools. A steering wheel puller, a steering shaft compression tool, 1/2" drive ratchet, metric sockets, cir-clip pliers, a couple of small picks, #2 philips head screwdriver, and some torque-head screwdrivers. carefully pull off the horn cover( may have a couple of scews holding it from the other side), unplug the horn wire (push and twist), remove the cir-clip, remove the nut, mark the area where the steering wheel and shaft meet (use white-out), press off the steering wheel, Compess the shaft, remove the retaining clip(with the picks), remove horn spinner base, remove turn-signal assembly. I need to step back alittle bit, the plug, to the turn-signal, is half-way down the steering column, to unplug it you need to remove the lower dash panel, the bolts holding the column up inplace. The plug is in clear sight but the wiring harness is inside a plastic sheath, you'll see what I'm talking about.

replace the head light switch as it is shorted and its back feeding

Try wiggling the Steering wheel, Shifter and Holding the Brake pedal Down Firmly.

I've noticed the same problem with my 2001 Ford Exployer Sport Trac. When my girlfriend drives my truck she raises the steering column, and when I'm driving, I lower the column. I noticed when I was driving recently the left front turn signal kept flashing quickly, thought it was the bulb, but changed and still happening. Today I took apart the steering column cover and noticed the wiring for the turn signals and hazards were loose. To fix this problem I pulled the wires out of column more as to not stress the connection. So far this has fixed the problem.

Check the turn signal switch. The brake lights run power through the turn signal switch. If the switch is bad or the connections are bad it will cause your problem.