Brake lights not working - Chevrolet Forum - Chevy Enthusiasts Forums

Brake lights not working


  Reply  
  #1  
Old  June 23rd, 2009, 5:43 PM
  • CF Beginner
    Join Date: Feb 2008
    Posts: 4
Brake lights not working

I have a 2003 and the right and left brake lights are not working. Checked bulbs, fuses with no luck. Suggestions clues???/

  #2  
Old  June 23rd, 2009, 5:49 PM
  • CF Active Member
    Join Date: Apr 2009
    Posts: 139
If both arent working at the same time, then its the fuse. And if you say the fuses are fine, then I'm willing to believe you. So it has to be a bad contact somewhere.

Try the hand brake (or however you call the brake that you use while parking the car). If that turns the lights on, then you might want to check the cables leaving your brake pedal. One of them might be disconnected.

  #3  
Old  June 23rd, 2009, 6:29 PM
  • CF Beginner
    Join Date: Feb 2008
    Posts: 4
Hand brake

tried the hand brake no change. I read another post on a chevy truck and it mentioned the brake light switch. My cruise has stopped working also. Won't engage at all. Didn't connect the cruise not working to the brake lights even though the brake switch does control both. Is this possible. If so is it difficult to change?

  #4  
Old  June 26th, 2009, 12:53 PM
  • CF Senior Member
    Join Date: Feb 2007
    Posts: 339
I think the left and rt hand side each have their own fuse...

Cruise will become inop- when it senses that brake lights arent working.

  #5  
Old  June 26th, 2009, 4:58 PM
  • Super Moderator
    Professional Mechanic
    Join Date: Jan 2008
    Posts: 2,571
If you are measuring voltage at the brake switch. I believe there is an orange wire that will have 12v at all time, and a white wire that has 12 volts while the brake is depressed.
If the orange wire has no voltage, chack for a broken wire or blown fuse, if there is no voltage on the white wire when the brake is pressed, and the orange wire does have voltage, then the switch is bad.

The em

  #6  
Old  June 28th, 2009, 8:27 AM
  • CF Beginner
    Join Date: Nov 2007
    Posts: 18
rb76wetu 
I have a 2003 and the right and left brake lights are not working. Checked bulbs, fuses with no luck. Suggestions clues???/

Do your brake light share the same bulb such as turn signal and running lights? If so and they are working then I would look into the brake switch as well.

  #7  
Old  June 28th, 2009, 6:27 PM
  • CF Beginner
    Join Date: Feb 2008
    Posts: 4
thanks got confirmation it was the brake light switch but after replacing and using the cruise one time the brake lights went out again and the cruise does not work.

  #8  
Old  May 20th, 2011, 7:37 PM
2002 ltz t blazer brake lites keep blowing bulbs any help please

  #9  
Old  May 21st, 2011, 6:09 PM
  • CF Beginner
    Join Date: Apr 2011
    Posts: 12
    Melbourne, FL
wayne adkinson 
2002 ltz t blazer brake lites keep blowing bulbs any help please
I had a similar issue on my 03 TB several years ago and found there was a recall for this problem. I took it in and they replaced both sides. The problem started again a year or so later. I disconnected the battery and cleaned the sockets on both sides with alcohol. I had to replace a backup bulb about 6 months ago but no other issues.
I have not seen the issue the OP had but something is causing the circuit to draw to much current and I would suggest checking the connections on the brake light assemblies. I thought they used to much contact grease which is why I cleaned them with alcohol and did not put any back.

  #10  
Old  July 6th, 2011, 5:56 PM
  • CF Beginner
    Join Date: Jul 2011
    Posts: 3
I have seen a number of Trailblazers (which years I don't know) which seemed to have the same progression of problems that my 2006 did.

First the left rear brake light went out. Several months later the right brake light went out. All the while, the top or cyclops light (whatever it's called) remained on.

I was told that the problem was switch inside the handle for the turn signal which also houses the cruise control.


  Reply
Tags
Search this Thread
Sponsors