Question about 2007 Chevrolet Silverado 2500HD

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Service trailer brake system message

?????

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  • jegallucci
    jegallucci Mar 23, 2009

    Where is the fuse located?

  • Anonymous Apr 08, 2009

    i wired a harness on a trailer wrong and after attatching it to my 07 chevy it says service trailer brake system ,even without it hooked up now all fuses good.---- ?????

  • Anonymous Apr 24, 2009

    07 GMC HD 15k miles....service trailer brake system came on w/o trialer being hooked up.

  • Anonymous Mar 14, 2014

    Service trailer brake system

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I got this error too on my 2007 2500HD and I wasn't too thrilled for the fact that I had to tow a 7k trailer w/o it's breaks for four hours.

I did get an answer though.

If you look it up in the manual, the "Service Trailer Break System" indicates an error in the truck intigrated break controller.

I just took my truck in to the dealer with this probelm and they said it is a "Known Engineering problem".
Quick summary of what the service manager said:
First they are replacing a cylinder, if it fails again they will reaplace a board.


Posted on Jun 30, 2009

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  • chavez677 May 30, 2010

    Is that covered under the warranty?

  • doc_nh Mar 21, 2014

    I know this is an older issue, but just got an email that said lots of people had looked at it.

  • doc_nh Mar 21, 2014

    There is another problem involved with the integrated break system. You can get a "Service trailer brake system" message if one of back tires slip. I don't remember what on why the software had this glitch, but if you are towing and hit a bump big enough to cause one of the back tires to jump and lose temporary traction it can trigger this message. Just pull over, turn off the truck, unplug the trailer, and wait a few minutes. When you hook it back up the message should be cleared. I found this out due to a really bad bridge in Massachusetts and a conversation with my dealership

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You have a short in your tow package wires or a blown fuse

Posted on Jan 25, 2009

  • chavez677 May 31, 2010

    were would i find these wires or the fuse box to find the problem?

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1 Answer

Where to find the wire going to the trailer towing plug for the braking.


As far as I know, your trailer towing package does not include a circuit for trailer braking. These packages normally only supply taillights, brake-lights, and turn signals.
RV sales and service dealerships should be able to help you.
God bless your efforts.

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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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2010 Kenworth t402


by releasing the park brake you are in fact putting air in the park brake (spring brake diaphragms) that compresses the springs and allows the brakes to release. When you apply the park brake you are in effect dumping the air out of the system and allowing the spring brakes to come on. The light is telling you that there is insufficient air in the park brake circuit to fully release the spring brakes. Some ideas are that the air lines on the trailer are opposite to the prime mover(tractor), there is a kink in the air lines in the trailer , the air tank that holds emergency air for the spring brakes system has an internal leak in a valve between chambers or externally between air tanks. I would make very sure that I fixed this problem before I travelled as the consequences of a trailer wheel lock up at speed could have very serious results.

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{: ) SERVICE PARK ASSIST The driver information center (DIC) displays SERVICE PARK ASSIST when the park assist module detects a malfunction in the object detection system and sends a request to the DIC for display of the message. The DIC also displays SERVICE PARK ASSIST when there is a loss of communication with the park assist module.
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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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1 Answer

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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1 Answer

"Check trailer brake system"?????


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.

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1 Answer

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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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