Brake pedal in s10 moves side to side, unattached somewhere under dash...how do I disassemble?

An electrical switch located on the upper side of the brake pedal arm. It has voltage going to it, and when you depress the brake pedal, the switch closes and let the voltage go to the brake lights. (These switches are adjustable)

brake light switch on the pedal under the dash needs ajusted and may be replaced.....hope it helps

There may be a malfunction in the shift interlock sys.
This sys. keeps the shift from being moved from park
unless the brake peddle is depressed. There are 5 fuse's, directly or indirectly related to the interlock system. Fuse #6 15amp in the fuse box under the hood on the left side. The next 4 are in the fuse box
behind the left side of the dash. Fuse #3 15amp/fuse
#18 15amp/fuse #16 20amp and fuse #4 15amp.
Check these first, before you move on to the brake
light switch, under the dash at the brake peddle.
And the shift lock solenoid, under the console left of
the shift lever. Hope this helps.

there is a vacuum diagrsm maby it will help u

wiring problem check loom also tapping brake pedal possibly a switch on pedal faulty

the brake pedal switch is the one you want, it is on the arm the brake pedal is attached to near the top of that arm, u will need to remove the panel under the dash to see it, here is a picture of that switch.

your power starts at the brake light fuse,check with a test light,then proceed to stop light switch on brake pedal under dash,one wire will be hot when when you check it with your test light, the other won't be until you press down the brake pedal then the power flows through to the second wire,if no power to second wire replace switch,if you have power remove tail light bulbs and check for power in side socket.

ther is a switch called a brake lifgt switch that has a pin that is moved by your boot brake pedal arm.
the way it works is: when you press on the brake the brake pedal moves down and the spring in the switch pushes out closing the contacts to your brake lights the switch is located high up under the driver's side of the underside of the dash near or, on the brake pedal support replace or, adjust this switch

check the switch on the brake pedal

the brake switch just pushes into the holder...its under the dash if you follow the brake pedal up toward the bottom of the dash you will see it touching the metal above the brake pedal pad.