Question about 2003 Chevrolet Tahoe

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Rear tail brake lights not working already checked fuse n its good.thanx

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  • silver top May 11, 2010

    if you are sure the fuse is ok and have checked the bulbs too ? then check the brake lights actuation switch at pedal it is just above pedal where it pivots the switch plunger may have stuck ie is not coming out of switch when pedal pressed and so will not put b/lights on if this is so ? then try wd40 spray or similar ? then manually try working plunger to allow it to work it is made of plastic and has a plug 2 wires attached

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  • Master
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Check the brake light switch on the brake pedal. See if there is power going in, and operate the pedal and check for power coming out of the switch.

Posted on Apr 25, 2010

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I have replaced both circuit boards for rear tail lamps. I have verified that all of the fuses are good. Yet, I still have no taillights or dashboard lights. I do have signal lights, brake lights and...


You only need to change the tail light fuse if it is blown. If you haven't checked it already, do that. Those stop/tail bulbs are 2 filament bulbs. One filament is for brake lights, and other filament is for the tail lights. So it is possible to have brake lights and no tails, if the filaments for the tail lights are burned out. But of course, it is unlikely that all the tail lights would be out and all the brake lights still work.

You may need a voltmeter to help solve the problem. It could be a problem in the headlight switch (a problem with the park light function), but is more likely a problem with the Lighting Control Module- or the Body Control Module-whichever your car is equipped with. GM first came out with the LCM, and a year or two later came out with the BCM. Both are mini-computers to control lighting and cabin functions. You would have to use a voltmeter and check things like power in and power out at the BCM of the park lights. You would thus need a wiring diagram to go along with the voltmeter. Those modules are located up under the dash-you can use google to see pictures of them, and maybe find locations.

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1 Answer

Brake lights and rear deck light do not work on 1991 Lexus ls400. I checked all fuses,bulbs, and Brake switch and they are fine. Help?


Have you probed the tail/brake lamp socket to see if power is there or you just assume it is? also make sure the ground is good for the brake lights Do that if not done already and let me know.

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My 2003 Pontiac Vibe tail lights do not work. The brake lights work. I checked the tail fuse. Turn signals work also. Why no tail lights?


Your turn signal lights and brake lights are the same lights . Question : do the front parking lights work ? The front and rear running lights or parking lights are all on the same circuit and fuse . If the front lights work , and the rear lights don't , make sure the bulbs are good first . If OK , I would suspect the problem is either a bad ground in the rear taillight wiring harness or a bad connection in the rear taillight connector Itself .

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2006 chevy impala rear tail light...


there is a connector that plugs into the light that should be looked at. is there any water leaks anywhere. there were problems with water leaks on some malibu models around the tail lights. pell open the inside covers and get to the tail light to inspect for this. also check those bulbs just in case they did go bad. any condensation in the light? not sure if the Impala has a single fuse for both tail light or one for each but you should check fuse box under dash and under the hood. good luck

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most rear tail lights and turn/stop lights are the same dual filiment bulb. it is possible for your tail light to work and your brake light not to and still have a bad bulb. I would check the bulb first, your brake light works on the left yes? this would mean that the fuse is fine

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check behind the brake peadle for a little button that pushes in and out when the peadle is pressed(this is your brake light switch) some cars have more than one of theese. manualy let the button out if the light works the switch is good if it does not disconect the harness from the switch and take a small piece of wire and jump the two prongs on the harness if the brake lights come on then you need a brake light switch. if this doesnt work check for power at the switch. if no power you have a bad fuse if there is power and you already jumped the wires to the switch then you have a broken wire between the switch and the tail lights.

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1 Answer

Brake light and flasher


check and test the socket ( pig tail ) that the lite plus int for power when the flasher is on. If there is power to it try a different bulb, if there is no power then you will need to trace the wiring circuit back towards the fuse box testing for power at all junctions. Good luck, and remember to rate all solutions you get. Thanx

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