Battery Disconnects For a 2020 GMC Sierra 3500 Diesel With Dual Batteries For Flat Towing
Published 10/06/2021
Question:
What is the proper method for disconnecting the negative terminal with a dual battery set up on the current generation GM diesel trucks when flat towing? Obviously RM466 is not an option with diesels. Should we set up a manual disconnect for both negative terminals? Neither manuals for 2020 Or 2021 have any mention of what to do with dual batteries.
asked by: Riley S
Expert Reply:
I reached out to our local GMC dealer and they assured me that since you are only removing the negative terminals they can be disconnected in any order and reconnected the same.
A Battery Disconnect Switch # SE73FR can be used to make disconnecting and reconnecting an easier process. As these are rated for up to 50 volts DC and 1,250 cranking amps they will be sufficient for your batteries.
Product Page this Question was Asked From
Seaflo Battery Disconnect Switch with Key for Boats and RVs - 1,250 Amps
- Accessories and Parts
- Battery
- Disconnect Switch
- Seaflo
more information >
Continue Researching
- Shop: Roadmaster Battery Disconnect for Towed Vehicle w/ Flat Tow Brake System - Diesel
- Shop: Vehicle Tow Bar Wiring
- Video: Roadmaster Battery Disconnect with Switch for Towed Diesel Vehicles Review
- Shop: Roadmaster Battery Disconnect for Towed Vehicle w/ Flat Tow Brake System - Gas Only
- Shop: Second Vehicle Kit for Demco Air Force One Flat Tow Brake System
- Q&A: Blule Ox Baseplate For A Diesel 2020 GMC Sierra 3500 Denali
- Q&A: Recommended Parts to Flat Tow a 2024 GMC Sierra 2500
- Search Results: bx8848
- Video: Install: Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit on a 2020 GMC Sierra 1500
- Video: How to Install the Demco Air Force One Flat Tow Brake System Second Vehicle Kit - 2021 Chevrolet Tah
- Video: Blue Ox Tow Bar Wiring Kit Installation - 2022 Chevrolet Colorado
- Video: How to Install the Roadmaster Battery Disconnect with Switch - 2024 Chevrolet Silverado 1500
- Shop: Blue Ox 4-Diode Universal Tail Light Wiring Kit for Towed Vehicles
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Shop: Vehicle Tow Bar Brake System
- Shop: Base Plate for Tow Bar
- Search Results: demco 6217
- Search Results: rm~156~25
- Search Results: demco 6271
- Search Results: rm156~25
- Search Results: 6271
- Q&A: Parts Needed to Flat Tow 2019 GMC Sierra Denali 2500 Behind Motorhome
- Q&A: Will Blue Ox Wiring Kit # BX8848 Work With a 2020 GMC Sierra 2500?
- Video: The Low-Down on the Blue Ox 4-Diode Universal Tail Light Wiring Kit for Towed Vehicles
- Video: Review of Roadmaster Battery Disconnect Switch Towed Vehicle Flat Tow Brake System Diesel - RM93MR
- Shop: Blue Ox Base Plate Kit - Removable Arms
- Shop: Blue Ox Accessory Kit for Ascent and Avail Tow Bars - Tail Light Wiring - 7-Way to 6-Way Cable
- Q&A: Does 2020 GMC Sierra 3500 Need Two Battery Disconnects for Flat Towing
- Q&A: How to Disconnect the Battery on a 2021 GMC Sierra with Diesel Engine
- Q&A: Is A Battery Disconnect Switch Needed To Flat Tow A 2020 GMC 2500 HD?