Trailor Brakes dont work

Tiny
CHAD M. PALOVICH
  • MEMBER
  • CHEVROLET
I own a 2002 Chevrolet Silverado 2500 HD Duramax Diesel. The trailor brake quit working. I checked all the fuses several times and none of them were blown. I can get the trailor brake to work if I use if manually, but I will not work when you st ep on the brake pedal. I took the trailor brake out of my suburban an installed it into the duraman and the problem still exists. All the brake lights on the truck and trailor work when I hit the brake pedal but the trailor brake will not engage. On the wire harness for the trailor brake there is a wiring diagram. One of the wires said input from vehicle brake light switch. I checked the voltage on that line and there was 0 volts wether you step on the brake pedal or not.

Do you think the brake light switch has gone bad?

There are several wires comming off of the switch. Is it possible that one goes directly to the brake lights, and one of the others go to the brake controller. This could explain why the brake lights come on when I step on the pedal but no output from the brake controller.

Signed
Please Help!
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Monday, May 29th, 2006 AT 9:43 PM

5 Replies

Tiny
LSUSSEL
  • MEMBER
Dont have very high knowledge with trailers. But what do you mean by trailor brake? The trailor brake light?
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Tuesday, May 30th, 2006 AT 8:42 PM
Tiny
CHAD M. PALOVICH
  • MEMBER
The electric trailor brake controller does not seem to be sending any voltage to the trailor brakes, (not to get them confused with the trailor brake lights). I tested the brakes on the trailor and they do work. It seems as if the electric brake controller is not getting any kind of signal to activate it when I step on the brake pedal.
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Wednesday, May 31st, 2006 AT 8:06 AM
Tiny
LSUSSEL
  • MEMBER
Check to see if the tralior brake switch has gone bad. Dont know alot about this issue. Let me know.
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Wednesday, May 31st, 2006 AT 8:12 AM
Tiny
ELZIEW
  • MEMBER
Guessing that one of your controlers is in good working condition. There is probably 4 wires coming out the back of the controler, one has to connect to your brake lite switch, that wire has to be on the side of the switch that goes to the brake ligths, or the side that is not hot till you press your brake pedal. This is what makes your brakes work when you apply your brakes. On Some controlers the angle they are installed affects it. If you still have your instructions check for settings, and double check your wire connections, the one that goes to the brake light for sure.
Hope this helps you
Good luck
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Friday, June 2nd, 2006 AT 11:13 PM
Tiny
CHAD M. PALOVICH
  • MEMBER
Thanks for all the help! I replaced the vehicle brake light switch and it solved the problem.
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Saturday, June 10th, 2006 AT 11:54 PM

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