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Trailer Brake Problem.

Discussion in 'The Garage' started by 2High4U, Mar 3, 2007.

  1. 2High4U

    2High4U 1/2 ton status

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    I have a valley trailer brake it displays numbers im guessing thats the percentage of braking(uts set to the lowest.

    there is another adjustment for ramp time
    This is all hooked up to my 99 gmc 1/2 ton suburban
    my problem is i have it set to 10 the lowest, it wont go the brakes stay locked up. I have tried it at 99 and the same thing im not sure about the ramp time.

    anyone have a similar experience I am going to pick somthing up in the morning tommorow and need to figure out whats going on

    I believe this is the one.
    http://www.etrailer.com/mm5/merchant.mvc?Screen=PROD&Store_Code=E&Product_Code=V52740&Category_Code=BC
     
  2. skyyk5

    skyyk5 1/2 ton status

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    Your brakes lock up when you apply them. Or they stay locked up?
     
  3. 2High4U

    2High4U 1/2 ton status

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    you can go about a foot and they lock up without even touching the brakes at all.

    Ive tried a couple of things and nothing makes a difference
     
  4. skyyk5

    skyyk5 1/2 ton status

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    Sounds like it's wired wrong. Dose it have a indicator light for when the brakes are on?
     
  5. 2High4U

    2High4U 1/2 ton status

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    yeah it does have an indicator.

    when i hit the brake it goes to the number 10 where I have it set.\
    when I am not on the brakes at all the screen is blank.

    when the trailer is unplugged I get a -- sign when I hit the brakes

    It is at the lowest setting for the but im not sure about the ramp time.

    I am having a lot of trouble finding out the instruction for this thing, it came with the vehicle when I bout it.
     
  6. Slapperbar

    Slapperbar Retired Navy NDT Examiner Premium Member

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    Might find a answer on towrig.com or the tow & trailer forum. :whistle:Both on this site.
     
  7. skyyk5

    skyyk5 1/2 ton status

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    If the brakes are locking up before you even hit the pedal, they are getting power before they should. Really sounds like it's wired wrong. Either at the truck or the trailer.
     
  8. 2High4U

    2High4U 1/2 ton status

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    believe it or not i didnt even think of that, forgot thats on here usually go to the garage.

    thansk
     
  9. AZ79K5Project

    AZ79K5Project 1/2 ton status

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    Exactly what was already stated. The truck may be wired correctly at the controller. The trailer on the other hand has bad wiring if you are getting a lock up immediately. Check the wiring harness at the trailer/truck connection.
     
  10. Littlebubba44

    Littlebubba44 Registered Member

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    there is a bad ground or the pug is wet. thats why the trailer we have did that we dry the plug and check the ground every year and haven't had a problem after, can't hurt to check
     
  11. 2High4U

    2High4U 1/2 ton status

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    Im thinking thats what it might be the trailer wiring or the plug is wet.

    I remember after washing it one time that it acted like it had a trailer hooked up to it after i cleaned it up went back to normal.

    I will go over the grounds to see if that may be a problem.

    thanks for all the suggestions. If worse comes to worse I can just remove the trailer brake wire from the connector since im hauling less than 1000lbs.
     

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