Recommended Flat Towing Components For A 2020 GMC Sierra 2500
Question:
Hello I have a 2020 sierra duramax denali HD with Allison transmission. It does have a 2 lo 2 hi 4 low 4 high and a ion in between marked as auto. It has auto D L and R at gear station on steering wheel. Can I flat tow it behind motorhome?
asked by: Jeff
Helpful Expert Reply:
According to the owner's manual you can flat tow a 2020 GMC Sierra 2500 as long as it has a 2-speed transfer case with a 4WD low and neutral. The wording isn't the best to determine if you have a two-speed transfer case so I recommend reaching out to a local GM dealership with your VIN to determine if you have one or not. If you do have one then I have the following recommendations:
Baseplate: Roadmaster Direct-Connect Base Plate Kit # RM86FR.
Tow Bar: etrailer XHD Non-Binding Tow Bar for Roadmaster Direct-Connect Base Plate # e84ZR. This tow bar comes with safety cables included as well so you won't have to purchase them separately.
Tow Bar Wiring Kit: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267. This will splice into your factory wiring to display your motorhome's traffic signals through the tail lights of the Sierra. You'll need to disconnect the battery before towing your Sierra as well.
Braking System: If your motorhome has hydrualic brakes then I recommend the Demco SBS Stay-IN-Play DUO Supplemental Braking System # SM99251. If it has air brakes then you'll need the Demco Air Force One Supplemental Braking System for Motor Homes with Air Brakes # SM99243 instead.
Products Referenced in This Question
etrailer XHD Non-Binding Tow Bar for Roadmaster Direct-Connect Base Plate - RV Mount - 10,500 lbs
- Tow Bar
- Hitch Mount Style
- Telescoping
- Steel
- 10500 lbs
- Fits Roadmaster Base Plates - Direct Connect
- Stores on RV
- Non-Binding
- etrailer
more information >
Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Tow Bar Wiring
- Splices into Vehicle Wiring
- Diode Kit
- Universal
- Tail Light Mount
- Roadmaster
more information >
Demco Air Force One Flat Tow Brake System for RVs w/ Air Brakes - Proportional
- Tow Bar Braking Systems
- Brake Systems
- Proportional System
- One Time Set-Up
- Fixed System
- Power Assist Brake Compatible
- Air Brakes
- Demco
more information >
Demco Stay-IN-Play Duo Flat Tow Brake System for RVs w/ Hydraulic Brakes - Proportional
- Tow Bar Braking Systems
- Brake Systems
- Proportional System
- One Time Set-Up
- Fixed System
- Power Assist Brake Compatible
- Hydraulic Brakes
- Demco
more information >
Product Page this Question was Asked From
Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Base Plates
- Removable Drawbars
- Hitch Pin Attachment
- Roadmaster
more information >
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