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General Motors' GMT400 platform.

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Why do my turn signals stop flashing when I apply the brake?

My turn signals work, but when I apply the brake, they stop? When I take my foot off the brake, it starts to flash again.

Contestado! Ver respuesta Yo también tengo este problema

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Do you have a trailer light plug?

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I'm having the same problem when I step on brake pedal the left turning signal stops blinking and the same on the right turn signal does the same thing but when take my foot the brake pedal on 2000 Chevy S10 pick up truck they start blinking again I don't know what the problem is but any help would be greatly appreciated thanks and God bless

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Hello , i just fixed my problem, simply adding another ground wire , direct from 7way outlet to the battery negative terminal , i am talking about my semi truck, Kenworth t800

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I have a video on YouTube with the solution for the same problem

https://m.youtube.com/watch?v=V0MWfj3qqf...

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Here is the solution to the same problem I had, this is a video I uploaded

https://m.youtube.com/watch?v=V0MWfj3qqf...

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Check your light bulbs, the two filament bulbs can shorten out on a filament when the brake is applied. Make sure you have the right bulbs in and check the wiring harness on your lights and take a look inside the light assembly for any short circuit. Also any addition like the third brake light and, like mayer said, a trailer light plug that is shortened can do it too. Good Luck to you

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Actually, on a trailer plug, wires for the brake lights and the turn signals may have been connected together, not unusual, as many trailers do not have separate lights for brakes and turn signals.

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All of these problems mentioned can be the result of a bad ground. When you operate both blinkers and brake lights and the blinkers stop blinking, it’s because the circuit is not good enough to operate both lights. Bad ground. Same with headlights and blinkers. Probably the same with fog lights. Easy solution is the add an additional ground for the tail lights. Tail lights are the farthest away from the battery. Find the ground wire in each tail light assembly and add an additional wire and connect it to a good solid metal point and your problems will be all gone!!

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Mine does similar but it only does it after dark or real cloudy days ???

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Not so! Added an additional ground to each tail light, and the problem still exists!

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For me on my 1955 BelAir it was bad ground.

I added another wire from tail light housing to the

body on both sides, solved the problem for me.

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I am having the same problem with my 02 jeep liberty. The blinker works just fine, but as soon as I turn the head lights on and apply the brake they don't flash just stay on. But when the headlights are off they work just fine when applying the brake.

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Terry Arnold, did you ever find the solution to you signal light problem?

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Did you ever correct your problem?

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I have a similar problem, my right hand turning signal blink faster when I apply brakes! pls assist skhinero@gmail.com

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Did you ever correct the problem

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I add a ground to one side rear ,after a while I added a ground to the other side rear

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I have a 05 monte carlo, my problem is my turn signals are going crazy, they work just fine while the car is in park, after putting in gear they stop work, also when i turn my head lights on thats when they work but they blink real fast, last thing my fog lights are very dim, I've replaced and checked fuses and bulbs, still same issues, can someone help, Thans Randy

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Mine is doing the same especially when below freezing. The CRAZIEST thing is when I turn my right turn signal on I lose acceleration and my car won’t go. I have to turn the turn signal off and let my foot off the gas then reapply for acceleration. It has now Gizmo in water as I now have recently had my air conditioning stop blowing cold, check engine light come one, engine with a down arrow come on and I have lost half of my acceleration as it is driving like it only has four cylinders firing. Once up to speed drives fine. There are 16 other codes popping off now. One day they all started working again then 2 months later everything went back out again. Also as I am typing this my dome light flickered twice and went back off after the lights have been out and sitting here for at least 10 minutes. It recently stopped starting after three hard starts. I changed the starter and upon completion I now get no power to my windows, my cluster doesn’t come on, my stereo doesn’t come on and and I only get battery light to come on when I turn the key. I took my dash apart and my rear cig lighter worked as I used it to plug a couple things in over the course of time. After inspecting everything and putting dash back together no lighter works now (2 in front 1 in back) could the same thing be causing my issue? I’ve been stranded for 2 months now. It’s my only car and I can’t get to pick my son of 3 years up three days out the week. It’s beginning to take a toll on him and myself. I have all tools necessary to fix whatever needs fixed however I can’t find the culprit so I can fix it. 2006 Chevy Trailblazer 4x4 6 cylinder the 480 or 460 engine.

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My Honda civic taillight works until I put my foot on the brakes then stops flashing

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Find your cars wiring diagram and go through every ground and remove, replace them with dielectric grease and new hardware. Also replace all your fusible links. Sounds like bad ground, possibly a blown fusible link that works occasionally.

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Does the current from the cold side of the brake lite switch when it's hot(pedal is mashed) go to blinker line(right/left) before or after the flasher?

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I have a 1952 chevrolet Styleline deluxe. Blinkers work fine until I apply the BRAKE pedal, then they stop blinking. Help!

Icemelt4@verizon.net

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