1996 chevrolet K1500 brake light switch

Hi, your basic symptoms will be. Your brake pedal. Will be very hard to push. When the pedal is engaged there will be a large vacuum leak, usually causing the engine to be very ruff or stall. If its bad enuff, youll hear the the air leak when pedal is depressed, hope that helps.

I will suggest watching this video. Just dont want to leave anything out. A thumbs up would be greatly appreciated if this answer is helpful

Yes its the brake booster if when the pedal travels to the floor you hear a vacum sound everytime.

check fluid level if low add also look and smell fluid if dark brown and smells burnt change fluid and filter --

remove the nuts that hold the master cylinder on and move it to the side,get inside the truck and remove the brake booster rod from the brake pedal and remove the 4 nuts holding the brake booster on.reverse the procedure.you got it.do not remove the brake lines!!!

Do the brake lights work? You might need to adjust the brake light switch.

IM SORRY BUT I DON;T UNDERSTAND WHAT YOU ARE TRYING TO SAY YOU DID THE VACUUM BOSTER CONTROL UNIT WHAT SWITCH DOSEN;T WORK AND WHAT LIGHT ARE YOU TALKING ABOUT

if its a vacuum booster,,their are two nuts that holds on the master cyl,,that needs to come off,,then there is four under the in side dash that needs to come off,,of course the vacuum hose

Does the turn signals or hazards work in the rear?? Yes... it may be the brake switch or the turn signal switch (power goes from battery, to the brake switch then to the turn signal switch, then to the lights. No? .. again.. possibly turn signal switch or the wiring between cab and bed.

Check the brake light switch under the dash attached to the brake peadal arm. It is wher the break booster push rod attaches. Sometimes that switch works loose.