Parts Needed to Flat Tow 4-Wheel-Drive 2015 GMC Sierra 2500HD Behind RV

Updated 04/10/2017 | Published 04/07/2017

Products Featured in This Question

Blue Ox Base Plate Kit - Removable Arms

(4921)

$531.32

Blue Ox Patriot Portable Flat Tow Brake System - Proportional

(483)

$1500.57

Blue Ox Alpha Non-Binding Tow Bar - RV Mount - 2" Hitch - 8,500 lbs

(480)

$1079.00

Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 4-Way Flat Connectors

(3400)

$85.90

Roadmaster Battery Disconnect for Towed Vehicle w/ Flat Tow Brake System - Gas Only

(404)

$202.90

Roadmaster Brake-Lite Relay Kit for Towed Vehicles

(737)

$48.07

Universal Magnetic Tow Lights - 20' Wiring Harness with 4-Way Flat Trailer Connector

(204)

$61.88

Question:

Hi, I have a 2015 GMC Sierra 2500hd . Can it be flat towed and are the base plates which look like they slide into the chassis sufficient to tow it.

asked by: Efrain

Expert Reply:

The online edition of the owner's manual for the 2015 GMC Sierra 2500HD indicates on page 10-95 that the 2WD version cannot be flat towed. You CAN flat tow 4WD versions with a 2-speed transfer case that has Neutral and 4-Wheel-Drive-Low settings.

The linked article provides a overview of the components needed to safely and legally flat tow. These include the tow bar, high/low hitch adapter, safety cables, a wiring/lighting kit, and base plates and a braking system on the towed vehicle. Additional help articles are included too.

For base plates I recommend the Blue Ox kit # BLU22QR because the arms are removable. These are rated for your truck's weight. With this you can use their Alpha tow bar # BX7380 which includes the safety cables. For lighting I like the no-fuss magnetic kits like # TL21RK but we also have diode kits such as # RM-154 with whichi you will use Battery Disconnect # RM-766.

For a braking system I prefer the wireless and portable Blue Ox Patriot # BLU37TR since it allows easy set-up and requires no permanent mods to the vehicle. If you use a diode kit you will also need a Brake Light Relay # RM-88400 but not if you use magnetic lights.

High/low hitch adapters are shown on a linked page; select the one that allows your connected tow bar to remain level (or no more than 3-inches out of level at either end).