Question about 2004 Chevrolet Silverado 2500HD

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Locks brakes on one side of trailer when off

On a 2004 Avalanche, the brakes lock on the right side of the trailer without brake pedal application and controller sending minimal power. Brakes have been adjusted and all 4 tires have equal pressure.

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Hi check that your hyd cylinder on that side isnt sticking

Posted on Nov 15, 2009

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1 Answer

Transmission locked up in park


Turn the ignition on so the lights are all up on the dash dont start the vehicle. Put your foot on the brake pedal and make sure u can hear the shift lock click in and out with repeated brake pedal applications. If you cant hear it check the shift lock switch onder the dash on brake pedal. Might be built into the brake light switch check that they work also. I hope this helps
Tyler

Mar 17, 2014 | Toyota Matrix Cars & Trucks

Tip

Trailer Wiring Standards (Color Codes/Plug Marks)


Hello all,

For those of you that have or occasionally borrow trailers and look at the wiring plugs with disdain (I mean face it they don't make sense, ground is white, +12vdc is black, etc), this is for you.

This will show you how to wire trailers with seven, six and four pin connectors

Plug Types/Application
7 Way - RV Trailers, Horse and Utility Trailers
6 Way - Horse, Stock and Utility
4 Way - Utility Trailers

Columns are: Color, Function, Mark on the plug.

Seven wire Trailer plugs (Large trailers with a battery and electric brakes):

Horse, stock or utility trailers:

White = Ground - 1
Blue = Electric Brakes - 2
Brown = Tail and clearance lights - 3
Black = Battery, aux power - 4
Yellow = Left turn/Brake - 5
Green = Right turn Brake - 6
Orange or Purple (not both) = Auxilliary or Reverse - 7

Recreational Vehicle:
White = Ground - 1
Blue = Electric Brakes - 2
Green = Tail and clearance lights - 3
Black = Battery, aux power - 4
Red = Left turn/Brake - 5
Brown = Right turn Brake - 6
Yellow = Auxilliary or Reverse - 7


Six wire trailer plugs:

Horse, stock or utility trailers:
White = Ground - GD
Yellow = Left turn/Brake -LT
Green = Right turn Brake -RT
Brown = Tail and clearance lights - TM
Red or Black (not both) = Battery, aux power - A
Blue = Electric Brakes - S

Recreational Vehicle: (color, use, plug mark)
White = Ground - GD
Yellow = Not used -
Brown = Right turn Brake - RT
Green = Tail and clearance lights -TM
Black = Battery, aux power - A
Red = Left turn/Brake - LT
Blue = Electric Brakes - S


Four wire plugs:
White = Ground
Yellow = Left turn/Brake
Green = Right turn Brake
Brown = Tail and clearance lights


Ground should be 10ga.
Others 14 ga

Best regards
Mike

on Sep 09, 2009 | 2004 Dodge Ram 2500

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2005 chevy avalanche rear brakes locking up


Could be your emergency brake cable is locking up,could be just one side on the rear.

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I am wiring my brake box for my horse trailer and the directions says to hook up to the cold side of the stop lamps. got it all hooked up but when I put the truck in reverse the trailer locks up and when...


Hi, the instructions may be confusing. You need to hook the sense wire to the cold side of the stoplight switch--not the stop lamps. The stoplight switch is above the brake pedal. Am I making sense?

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Have a 96 F350 when I plug in any trailer it locks up the trailer brakes.. I can hook that trailer up to another truck and I don't have any issues.


It sounds like the electric brake (Blue Wire) from your truck is in the wrong location in the socket from your truck

or

check the connection to the brake pedal it has a wire that goes to it(Usually) white or red it may be connected to the wrong side of the switch

one side has power at all times the other only when you hit the brake most likely this is the problem. the wire needs current only when the truck brakes are depressed.................Good Luck

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2004 Mustang gets locked in Park


The brake pedal switch will casue both these issues. Are you sure the switch is good? You can test it with a multimeter. Remove the switch. When it's removed the switch will be in the closed position. When you adjust it, you want to hear the switch click right after you depress the pedal. Adjust it so the switch doesn't click until you begin pressing the pedal. Good luck.

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Truck not stoping and anti brake is working.


dosen't stop at all or just slow?, if the abs is working then you should feel the pulseing in the brake pedal just before tire lock-up, the tires will not lock-up with abs fully funtioning unless all four tires or two are in lock-up depending on the abs application, if abs fails it reverts it self to regular braking ability, hope this helps

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I found the problem. Talking with a technician from the controller company, we determined that it was a fuse problem. I found that the fuse to the CHMSL was blown.


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Looking how to get the brake switch out of my 2004 avalanche or maybe even how to adjust it. I have lost my cruise and my brake lights do not come on


It should be under the dash near the top of the brake pedal arm. You can adjust it so the button on the switch releases when you push the brake pedal. They used to screw in and out to adjust.

Good luck.

Jun 20, 2009 | 2004 Chevrolet Avalanche

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