Question about 2001 Chevrolet Blazer

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All lights work, except the brake /tail lights,the L.E.D. brake light on top works

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  • Chevrolet Master
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The third break lights are LED and the circuit board may have gone bad or the solder may have gone bad. The circuit board is built in the third brake light and is a seal unit. You may have to replace the unit, there is a relay for the third brake light and that is located on the glove box behind the panel that say's relays. There are three relays in there, the center is for the fuel pump and the two out side are for the A/C and third brake light. Just swap them around and see if the brake lights come on. Good luck and keep me posted. 

Posted on Jun 29, 2009

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Check the signal ligth assembly, this truck were re-called for that
I had the same problem after replacing the signal ligth switch problem was solve

Posted on Jul 01, 2009

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  • Master
  • 410 Answers

Sounds like your brake light switch, located on the brake pedal, has gone out. Shouldn't cost to much at auto parts store. Thanks for using FixYa!

Posted on Jun 26, 2009

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Posted on Jan 02, 2017

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SOURCE: 2003 gmc envoy xl brake lights dont work

theres usually a pressure switch behind the brake pedal, sometimes the plastic hex nut rattles loose and you have to retighten it.

Posted on Apr 12, 2009

egoboss187
  • 53 Answers

SOURCE: no tail lights/brake lights. flashers work

check the fuses

Posted on Nov 29, 2008

  • 2 Answers

SOURCE: no brake lights , everything else works

try playing around with the turn signal lever,push towards the dash.had same problem with 98 blazer,that is where your switch is located.

Posted on Jun 29, 2009

  • 290 Answers

SOURCE: rear tail lights not working

If both tail lights are not working it is likely to be a fuse or bad connection under the hood or a connector at the back see if you can trace the wires to a connector and see if it is dirlty or corroded.

Posted on Mar 02, 2010

  • 447 Answers

SOURCE: Brake light dont work. 2006 chevy truck, 4.8L 2wd

Some of these had two fuses for brake lights. One for the top/center stop lamp and another for the rear left and right brake lights. Usually one said "stop" and the other said "brake" and one was in the underhood panel while the other was in the dash fuse panel. It's not uncommon to blow a brake light fuse [LR and RR] if you tow a trailer but some of these had seperate fuses for the trailer lights also. If you have a test light check both sides of the two fuses for power [ignition key on] while stepping on the brakes. It should at lest narrow your search a bit.

Posted on Jun 09, 2010

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Brake lights dont work


On some cars the bulb for the brake lights is separate than the tail lights. If not then check the fuse for the brake lights. It is typically separate from the tail lights. Also check for broken wires in the trunk area. These could be damaged from items in the trunk moving around.

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No brake lights , everything else works


Sounds like your brake light switch, located on the brake pedal, has gone out. Shouldn't cost to much at auto parts store. Thanks for using fixya.

Jun 25, 2009 | 2001 Chevrolet Blazer

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All lights work on the rear except the three brake lights


Sounds like the brake light switch has a problem. Located above brake pedal and activated with the brake pedal arm. Check for power going in and coming out when you apply the brake.

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Tail break lights don't work. Window break light does work however. Bulbs have been replaced.


Check the brake light fuse. The high mounted brake light (third brake light) is on a different circuit than the brake lights. Hope this helps.

May 23, 2009 | 1998 Mercury Mystique

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Brake lights will not come on. It is not the bulb. The tail lights work.


The tail lights working would not necessarily mean that the brake light bulbs are good. If they are the type that have a double filament (ie: one filament for the tail light and another filament for the brake light ) the brake light filament could be bad and the tail lights still would work. If they are either single filament type bulbs or double filament type, I would check the bulb, fuses, and contact switch on the brake pedal.

May 10, 2009 | 2003 Chevrolet Suburban 1500

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Break light problem


Do you know if the brake light bulbs are working? (are the bulbs good?). (the bulbs have two parts, one for brake lights the other for running lights)
If the third brake light bulb is working the brake lights should be with good light bulbs.

Jul 22, 2008 | 2005 Honda Accord

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