Question about 2003 Pontiac Grand Prix

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Both brake lights not working. back ups ok, turn signals working. what are chances of both going out at the same time?

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Its possible but not common, Chances are you have a blown fuse or bad relay. The next question is what caused this to happen in the first place. Start with checking the fuse and then the relay see what you get.

Posted on Oct 08, 2010

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Posted on Jan 02, 2017

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I have a 1987 Chevy r10 truck the right tail light went out so I replaced it with the reverse light just so I can go to the store and get a new one and after replacing it the left brake light stop working ...


Your turn and brake lite use the same bulb filament, just not at the same time. I'm talking about lower brake lites in case you have a high mount brake lite, I don't think you do.
So if the turn signal on that side works ok, the wiring circuit and ground should be ok. The lower brake lite is wired through turn signal switch. The voltage wire for your brake lite is yellow, use a test lite to check for voltage with brake activated.

Oct 16, 2017 | Cars & Trucks

1 Answer

1988 chevy 1500 everythingworks exept brake light turn signal ok tailghts ok no brake lights


Since the turns work in the back, that means the brake bulbs are good. Brake lights and turn signal lights share the same filament in the bulb.
There is a fuse for the brake lights. Then, there is a brake light switch on the brake pedal. You need a voltmeter or test light, after checking that fuse is good. Need to check if fuse has power on it. This is one of those fuses that are hot at all times-as long as battery is connected, voltage should be going through the fuse and up to the brake light switch. Check for power both places. The switch on the pedal is a simple on-off switch. When brake is depressed, the spring loaded switch is turned on-passing power on towards the brake lights.
But then the brake wire goes into the turn signal switch before going on to the brake bulbs...however, since your turns work good, I doubt if there is a problem in the turn switch. First check if the brake light switch is sending power on when switch is on.
Let me know what you find. Good luck.

Nov 27, 2013 | 2000 Ford Focus

1 Answer

1998 cavalier, back turn signals do not work, replaced bulbs, front turn signals work, brake light does not work. but brake light works inside the car on rear window.


OK try this turn the signal light on one side or the other then push brake pedal if brake lights come on replace the turn signal switch

May 10, 2011 | Chevrolet Cavalier Cars & Trucks

2 Answers

No brake lights on rear of truck. Turn signals work and brake light on top with cargo light works but not on rear of truck


Brake light on top works tells me the switch at the pedal is ok. Turn signals working tells me that the turn signal filaments have power.

I would try changing the bulbs and if that doesn't work have an electrical shop trace the wires and check for power on the brake light circuit in the back.

Jul 04, 2010 | 1996 Chevrolet K1500

1 Answer

I have a holden statesman vr 1994 and have no brake lights. Fuse and bulbs all good


ok fuse and bulbs are ok then you have to start looking at switches there is a switch on the arm of the brake pedal, use a test light and make sure 12 volts is going through the switch then that voltage goes upto the multifunction switch in the stearing colum, this has your hazard lights, turn signals, and bright headlamp controls in it, check this by turning on the hazard lights see it the tail lights flash this uses the same wire as the brake light so if it lights you have a bad brake switch at the pedal, if nothing lights up 90% chance its the multi function switch

Mar 02, 2010 | Acura CL Cars & Trucks

1 Answer

Brake lights work intermittently


It sounds like a wiring fault - an earthing problem. Have a look around the lights/inside the lights themselves.. rear and front lights, brake lights, etc ...check the wires for corrosion/splitting. In particular check any black earth leads where they attach to an earthing point.

Mar 26, 2017 | 1997 Chevrolet Lumina

1 Answer

99 Rodeo Right turn signal makes brake lights blink


TURN SIGNALS WILL FEED BACK THROUGH THE TURN SIGNAL SWITCH.THEY ARE INDEPENDENT OUT SIDE ON THE CAR BUT NOT IN THE SIGNAL SWITCH.REPLACE THE SIGNAL SWITCH

Jan 02, 2009 | 1999 Isuzu Rodeo

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