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Brake Lights Staying On, No Right Turn Signal

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NFSGamerUSA Enthusiast

NFSGamerUSA

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I realize I don't have a GMT800 or GMT900 truck (I have a '98 K1500), but apparently a lot of GMT400 post threads in here and this is the most popular sub-forum, so I didn't think it'd hurt to ask. Anyway, here is the link to the thread describing my troubles. My right turn signal has gotten to where it won't blink (but will light up), but the left signal and hazards will work, and I even replaced the relay. Now, my brake lights are staying on all the time and won't go off even with all of the light related fuses pulled. Any ideas?

rjirvine Enthusiast

rjirvine

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If the brake lights are on, you can check the switch under the brake pedal to make sure it is ok. The backing plates for the rear light assys were notoriously bad in the early 90's, but not sure if they had the problem fixed by 98. I would take a good look at both of them. Since you just bought the truck recently, I'd look around the rear bumper to see if the previous owner had some kind of hitch wiring that may be causing you grief. When you say you replaced the relay, did you mean flasher?

hubbycap Senior Enthusiast

hubbycap

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Posted
I am thinking its the turn signal switch. Brake lights, turn signals & 4 ways all go through the turn signal switch.

 

 

Unfortunately so does the wiper/washer and cruise controls. They call it the smart stick. When I replaced mine because my blinker would just start blinking for laughs, it was about $250 for part.

Guest chevydeerhunter

Guest chevydeerhunter

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Posted
I am thinking its the turn signal switch. Brake lights, turn signals & 4 ways all go through the turn signal switch.

 

 

Unfortunately so does the wiper/washer and cruise controls. They call it the smart stick. When I replaced mine because my blinker would just start blinking for laughs, it was about $250 for part.

 

 

Haha! If it caused the blinker to start blinking for the hell of it, they should call it a Smart-a*$ stick!

NFSGamerUSA Enthusiast

NFSGamerUSA

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If the brake lights are on, you can check the switch under the brake pedal to make sure it is ok. The backing plates for the rear light assys were notoriously bad in the early 90's, but not sure if they had the problem fixed by 98. I would take a good look at both of them. Since you just bought the truck recently, I'd look around the rear bumper to see if the previous owner had some kind of hitch wiring that may be causing you grief. When you say you replaced the relay, did you mean flasher?

 

Yes, I meant flasher. I have this same thread in the "Ask the GM Technician" subforum and they seem to think it's my trailer connection terminal as you thought. I'm going to take a look at that, next. Thanks for all that replied! If the trailer connection isn't the problem, I'll probably end up replacing the switch assembly. :lol:

NFSGamerUSA Enthusiast

NFSGamerUSA

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***UPDATE***

 

Well, today I found that my left turn signal no longer worked, nor my right, nor my brake lights. Apparently the fuse blew, but I've replaced it and they're doing the same thing as they were before again. Does this tell me/you all anything? AND, I found that once I turn on the right turn signal (still not blinking) and turn it back off, the brake lights/turn signal lights are no longer on, but after doing my left, they stay on. This now makes me think that it might not a brake light related issue at all, just solely a problem with the turn signals (the brake and turn signal lights are the same lights, correct?), as proven by my discovery with the right turn signal. However, after turning off the right signal, my brake pedal failed to light up the brake lights. I'm still going to try to find the trailer connection wire/fuse and disconnect it to see if that's the problem, as it might be corroded, plus mine wasn't factory installed and I'm not quite sure where to find the fuse or the connection. If any one else has some ideas they think might be the problem, let me know! Thanks all!

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