I have a 90 Prism that had the same problem. There is a platic spacer on the brake arm the crumbled with age. it is very hard to see where it is located. I glued a penny and a dime ( the thickness of the space ) to the brake arm....problem solved.
I don't know for sure about the Geo although we do have one but I just went though a similar situation with my Toronado. When I replaced the brake power booster my lights wouldn't shut off. I got under the drivers column and realized that the switch had been moved while moving things around to get the booster out.
On most cars there is a switch (with a little button that moves in and out) that must be up against the brake arm. If it is not up against it, the brakes are reading it as on. When the brakes are depressed up towards you, it depresses the button and registers as being free.
Hope that helped.
because you ugly alternater.
The running lights have a bad ground.
check the fuse for the brake lights, they have thier own. also check the brake light switch at the at the top of the brake petal
burnt out lightbulb!
33 Ft. lbs
Check the switch at the brake pedal .
I'm not a mechanic but I would start by checking the brake fluid level in the brake master cylinder in your engine compartment
check brake light fuse and brake light switch on pedal
Check the wire which is going inside of the trunk hood to the brake lights.
Blown bulbs, blown fuse, broken or out of adjustment brake light switch.
check the brake light switch on the brake pedal
Sounds like the main ground wire for the rear lights broke or rotted off the frame.