Parts Needed to Flat Tow a 2015 GMC Terrain

Question

Question:

I have a 2014 Thor ACE 29.2. It currently has a 4 way flat for towing and I would like to convert it to a 6 way round. I will also need to have my 2015 GMC Terrain set up to flat tow. I had my mind made up on a Blu Ox Alpha tow bar but has seen some good reviews on the Roadmaster Sterling. Maybe you could give me some recommendations on complete setup. Also looking at Patriot ll supplementable braking. I would appreciate any help.

asked by: Larry

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Expert Reply:

In order to convert the 4-way trailer connector on your 2014 Thor ACE 29.2 to a 6-way trailer connector you would want to use the Mighty Cord Trailer Connector Adapter part # A10-6034VP. The adapter plugs into the 4-way you have on your RV and will require you to hardwire in 3 additional wires. The white wire is for the ground and will need to be attached to a clean bare metal surface. The black wire will then need to be ran to the battery with an in-line fuse holder such as part # SWC9539 placed 6" from the positive battery terminal. For a fuse you can use part # C58450-1. The last wire you will need to run is the blue brake output signal wire which will need to be connected to the brake controller for normal travel trailer towing applications but since you will be flat-towing with your RV, the brake output signal wire will not be used. You can secure the 6-way trailer connector to the back of your RV using part # RM-910030-5.

In order to successfully flat-tow your 2015 GMC Terrain you will need a base plate kit, towbar, supplemental braking system, wiring harness, safety cables, and possible high-low adapter. I will attach my recommendations for each of the following items for you below.

Base Plate Kit for Roadmaster Tow Bar: Roadmaster EZ Base Plate Kit part # 523163-1 (See Install Video)

Base Plate Kit for Blue-Ox Tow Bar: Blue Ox Base Plate Kit part # BX1689 (See Install Video)

Roadmaster Tow Bar: Roadmaster Sterling All Terrain Tow Bar part # RM-576 (See Review Video)

Blue-Ox Tow Bar: Blue Ox Alpha Tow Bar part # BX7380 (See Review Video)

In regards to the Blue-Ox Alpha Tow Bar vs the Roadmaster Sterling Tow Bar, I like the Alpha tow bar more for a few reasons. Aside from being much more cost effective, the Alpha tow bar has a 3-year warranty compared to the 1-year warranty with the Sterling tow bar and the Alpha tow bar uses a triple-lug connection whereas the Sterling tow bar only uses a dual-lug connection.

Tow Bar Wiring Harness: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit part # RM-15267 (See Similar Install Video)

Supplemental Braking System: Blue Ox Patriot Portable Braking System part # BLU37TR

High-Low Adapter: See Article/Selection

Accessory: 12 Volt Outlet Kit part # RM-9332 (See Similar Install Video)

Accessory: Roadmaster Battery Charge Line Kit for Towed Vehicles part # RM-156-25 (See Similar Install Video)

Accessory: Roadmaster Stop Light Switch Kit part # RM-751439 (See Similar Install Video)

Accessory: Blue Ox Fuse ByPass Switch for Towed Vehicles part # BX88272 (See Similar Install Video)

According to the owners manual for your 2015 GMC Terrain, the # 32 fuse located in the vehicle's instrument
panel fuse block must be pulled in order to eliminate battery drain. The above fuse bypass is not required but will make engaging and disengaging the fuse much easier.

expert reply by: Conner L

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Answer 1

We can help you ready your 2011 GMC Acadia AWD for being flat towed behind your motor home. A great article that covers all the needed items is linked for you. I checked the GMC online owner's manual for your Acadia and on page 10-88 it…

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Answer 2

According to the online manual for the GMC terrain that I reviewed the vehicle can be flat-towed once a few preparation steps are taken, including removal of fuse 32 to prevent battery drain. I suggest you refer to your owners manual, specifically…

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Answer 3

The first thing I would recommend to do is to check your owners manual or with the GMC dealer on the proper procedure for towing the vehicle. Some vehicles might need to be equipped with a transmission lube pump, an axle disconnect, drive line…

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Answer 4

You will need base plates for the Terrain. We have the Roadmaster EZ style kit, part #523163-1 available for your 2010 GMC Terrain. To use Roadmaster Baseplates with a Blue Ox Rangefinder II, you will need a set of bracket adapters, part #RM-037.…

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Answer 5

According to the online manual for the GMC terrain that I reviewed the vehicle can be flat-towed once a few preparation steps are taken, including removal of fuse 32 to prevent battery drain. I suggest you refer to your owners manual, specifically…

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Answer 6

The Blue Ox base plate you can use on your 2015 GMC Terrain SLE is part #BX1689, and the linked video shows you the installation process. Flat towing requires a number of components in addition to the tow bar and base plates. These items include…

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Answer 7

Yes, the Blue Ox base plate kit part #BX1689 that has been confirmed to fit your 2012 Chevy Equinox will work with the Blue Ox Avail tow bar part #BX7420.

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Answer 8

Your 2010 GMC Terrain would have used the Roadmaster EZ Base Plate Kit #523163-1 if you have the Roadmaster Sterling All Terrain #RM-576. Since you upgraded to the 2015 Terrain these parts will actually stay the same so you will just need to get…

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Answer 9

To see a couple diagrams that show how the 6-way to 7-way adapter part #47435 is wired up check out the pictures I attached. The 6-way of this adapter has the center pin as the 12 volt circuit. That is the usual circuit that gets moved around on…

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Answer 10

When using a tow dolly like the Roadmaster Tow Dolly with Electric Brakes - 4,250 lbs #RM-2050-1 with your 2006 Jeep Liberty it is important to follow the procedure outlined in your owner's manual. These are the steps I found listed in the…

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Answer 11

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 12

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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Parts Needed to Flat Tow a 2015 GMC Terrain

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