I have a 89 GMC pickup with brake light stuck on..
I used to be able to pull back on the peddle to shut brake light off, but now it stays on so I pull the battery. What would cause this? Any ideas? I thought it was the return spring, but can't find it at all. :/
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need. goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Many cars have a switch that rests on the arm for the brake peddle that self adjusts. If something gets stuck between the switch and the peddle it can adjust the switch too far way from the peddle arm. When the object that got in the way falls out or is removed the switch will no longer contact the peddle arm and the brake lights will stay on. You would probably need to remove the panel cover for the bottom of the dashboard to access the brake peddle are and brake light switch. Once you see the switch depress the peddle with your hand and push the switch toward the peddle are. It shouldn't be too hard to push back into place and will probably make a series of clicks as it moves. Once the switch has been pushed in release the brake peddle and the switch will adjust itself back to where it should be.
/* Style Definitions */
mso-padding-alt:0in 5.4pt 0in 5.4pt;
font-family:"Times New Roman";
The brake switch is usually like the switch in your trucks
doorframe that turns your dome light off. You can push in on the switch with
the door open to get a feel for how it works. Push it in and your dome light
turns off. The same thing happens with your brake light switch. When you push
on your brake peddle it is the same as your truck door being opened. When the
brake peddle, is in its home position as in no pressure on the peddle pad, the
arm of the brake peddle pushes the button in which, breaks the circuit to the
The switch could be bad. It is easy to spot the switch look
at the arm of the brake peddle and see if you can see a bracket that holds the
switch against the brake peddle arm. Use a flashlight.
You might be able to tell if the switch is bad by only
removing one of the wires and see if your brake light goes out. If your brake
lights go out with one wire removed, the switch most likely is bad.
I have also seen where a driver caught there shoe string or
shoe on or under side of the peddle and when they pull there foot up they bend the
bracket that holds the brake light switch. By bending the bracket they move the
switch away from the peddle arm and the switch no longer gets pushed in enough
to break the circuit.
A bent bracket can be an easy fix just bend the bracket back
to its original position. Please be very careful the bracket can be sharp. In
addition, the bracket can crack, to help prevent this let your truck heat up
inside if the A/C has been on etc.
You can take all of the wires off the switch and remove it.
Take the switch to your local auto parts store they should have one and will be
glad to test your existing one.
If there are more then two wires draw your self a diagram,
tag the wires with masking tape, and number them. Please be aware that you
could blow a fuse if you touch the wire ends to any metal parts of your truck.
If you do not already
have fuses in your glove box, you should pick up some while you are at the auto
parts store. Please put the fuses in your glove box. I run into many people who
say yes I have fuses, at home in there garage! I do not know about everyone
else but my truck never breaks down in my garage. I think it is scared of all
the tools around it. LOL.
The brake light switch is located is located under the
dash, at top of the brake peddle.
To test the sw, use a 12v test light check for constant power out of the switch, with nothing else on. If there's pwr. out replace the switch.
Hope this helps. Good luck
not that i'm aware of. if the problem is the lights staying on locate the relay in the fuse panel under the dash and replace it. while you are under there have a look at the brake switch to see if it is stuck.
The problem may be that the master cylinder needs to be bench bled,there is most likely air trapped in the piston of the master cylinder.The problem comes from the piston not being fully actuated when connected to the pedal assembly.A vacuum bleeder will generally pull it out.