Question about 2007 Chevrolet Silverado 2500HD

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"Check trailer brake system"?????

My truck keeps telling me to "Check Trailer brake system." And now recently, it's saying to "check trailer brake wiring." Sometimes the brake controller works, and sometimes it doesn't. I can't take the risk of Chevy reprogramming my computer as it's been modified...if you know what I mean. Help! I bought this truck off of Ebay and love it, but for the obvious testosterone it emits :( Also, one other thing: I drove it recently on the highway (unknowingly) in 4H going 80. Should I be as worried as I am? (Go easy on me) I need to fix the trailer problem, I just want to avoid having to send the computer away AGAIN to be reflashed as I didn't have the use of my truck for 3 weeks. Just tell me where to begin. Thanks!!!

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You really need to be specific. Does it do this with or without a trailer on the back??? if so, then you need to check and verify that all the lights and brakes are working on the trailer. If it does this without a trailer on the back, then its a wiring problem on the truck.

Posted on Sep 28, 2009

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Utility trailer electric brake are not working when connected to my truck


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Lost my brake and turns on my trailer plug checked fuse and wire harness back still nothing is there a relay besides under hood or something else to check


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DOES YOUR VEHICLE HAVE A SEPARATE REAR BLINKER CIRCUIT AND BRAKE LIGHT CIRCUIT? If so, you will need to purchase an adapter in order to use a standard trailer plug.

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We just hooked up our Ford 1996 econoline van to a trailer. The trailer brakes are not working. We checked all the fuses - all seem to be fine. The fuse diagram on the fuse box panel does not tell you...


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1 Answer

Instructions for wiring a moving trailer connector


accessconnect_logo.jpg


Trailer Wiring Diagrams 4 Way Systems

4 way flat molded connectors allow basic hookup for three lighting functions; right turn signal / stop light (green), left turn signal / stop light (yellow), taillight / license / side marker (brown) and a ground (white).

4%20way%20wiring.jpg 4way_vehicle.jpg 4 way tow vehicle side.
4way_trailer.jpg 4 way trailer side.
5 Way Systems

Same as 4 way system listed above but adds a extra blue wire for brake signal or auxiliary power. Used on pop up camper trailers or utility / boat trailers.
5way_vehicle.jpg 5 way tow vehicle side.
5way_trailer.jpg 5 way trailer side.
6 Way System, Rectangle Plug 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). The red and blue wire can be used for brake control or auxiliary. Use on a small motorcycle trailer, snowmobile trailer or utility trailer. Can also be used as custom wiring on trailers with 3 light/wire systems. See "Tow Vehicle Taillight Wiring" below.
6way_rectangle_1.jpg 6 way tow vehicle side.
6way_rectangle_2.jpg 6 way trailer side.
6 Way Systems, Round Plug

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (sometimes red) 12v and blue electric brakes wire may need to be reversed to suit the trailer. Check with a test light or VOM. Uses: horse trailer, travel trailers, landscaping trailer, car trailer, etc.


6way_vehicle.jpg 6 way tow vehicle side.
6way_trailer.jpg 6 way trailer side.
7 Way Systems

Round 2" diameter connector allows additional pin for auxiliary 12 volt power or backup lights. Uses: heavy duty landscaping trailer, car trailer, boat trailers, horse trailer, travel trailer, construction trailer, etc. Check with a test light or VOM.


7way_vehicle.jpg 7 way RV flat blade tow vehicle side.
7way_trailer.jpg 7 way RV flat blade trailer side.

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2009 Silverado 4x4 pickup with towing package and factory installed Trailer Brake controler installed at factory. The system has worked in past. I had my Stock trailer rewired and things tested out fine...


It sounds like you lost a ground.
check traier hookup first.
Probably not the controller.
P.S. There are multiple fuses for this setup. check all ! ! !

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Hooked my 2007 Sprinter camping trailer to the factory lights/brakes hook-up located below bumper of my 2005 Silverado 4x4 extended cab truck. Everything works fine except for the right trailer turn...


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Is this the first trailer you have hauled?
Let me know, and we will go from there.
REgards,

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