Installation of Brake Controller on a 2011 GMC Sierra With Tow Package

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Question:

Looks like my Sierra has both the blunt cut wires and a plug in. The wire number and colors match that of the so-callede blunt cut wire. Can I use this connection? 2011 Sierra w/ tow package

asked by: Jim B

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Expert Reply:

We have not seen a 2011 GMC Sierra that will have a factory brake controller plug-in for an aftermarket brake controller. All of the 2007 and newer GM full size trucks and SUVs quit offering a plug-in type connection. None of the brake controller harness manufacturers produce a plug and play wiring harness that will fit a 2011 GMC.

The plug you are referring to is probably not for the brake controller. If you need to find out what the plug is for you can use a circuit tester, part # PTW2993, and test the function of the wires on the plug.

You will need to use the blunt cut wires under the left side of the instrument panel to the left of the steering column to install a brake controller. The wires can be identified by a white label and the color of the wires. The wire colors are (1) Red/Black wire, (1) White wire, (1) Light Blue/White wire and (1) Dark Blue wire and possibly (1) Orange wire. If you have the orange wire it is not needed for a brake controller. I am including a link to a video of a brake controller being installed on a 2008 GMC Sierra. It will show where the wires are located.

I do offer a pigtail wiring harness like the Draw-Tite Pigtail Harness, part # 20127, that will have blunt wires on one end that you can connect to the blunt wires on your vehicle. The other end of the harness will have a plug that will plug into the brand of brake controller you will be using. This # 20127 harness is for Tekonsha and Draw-Tite brake controllers.

I am including a link to a FAQ page on brake controller installation in a 2007 and newer GM truck.

expert reply by: Jeff D

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Answer 1

If your 2011 GMC Sierra has a factory 7-Way then the needed wiring is already run, but there isn't a connector under your dash. To install the Tekonsha Prodigy P3 #90195 you need to hardwire it to the brake controller wiring under your…

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Answer 2

Brake controllers such as the P3 you referenced #90195 will go into a sleep mode after about 15 minutes of it sensing no movement. If you peek through the window after 15 minutes then it should be in sleep mode. Opening the door or causing movement…

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Answer 3

Most brake controllers will stay active for several minutes after the vehicle is turned off and then will eventually go into sleep mode. The small LED light draws such a small amount that it would it would not cause your battery to drain. I attached…

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Answer 4

The absolute closest Bearing Buddies we have is the #BB1781 which fits hub bores of 1.781". I recommend measuring your hub bores to confirm the right size you need. The best way to get the most accurate measurement is with calipers like the…

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Answer 5

An ST205/75R15 tire size like you have now will have a section width of 8.1 inches and overall diameter of 27.3 inches. An ST225/75R15, #AM10256, will have a section width of 8.9 inches and overall diameter of 28.4 inches. So the larger size is 0.8…

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Answer 6

EZ lube spindles are more than just a zerk fitting attached to the end of the spindle. There would need to be a hole in the spindle between where the bearings ride for the grease would then fill the hub by. To be perfectly honest using EZ lube…

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Answer 7

The rear side of a Super Lube hub has a grease zerk fitting that works like the one on a Bearing Buddy grease cap such as #BB1781. These zerk fittings let you add wheel bearing grease to the hub interior without having to remove it from the spindle.…

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Answer 8

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 9

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 11

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

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Answer 12

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Installation of Brake Controller on a 2011 GMC Sierra With Tow Package

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