Parts Needed to Flat Tow a 2003 GMC Sierra with a Roadmaster Falcon 5250 Tow Bar
Question:
What vehicle mounting brackets are required for 2003 GMC Sierra 1500 4x4 with a Roadmaster Falcon 5250 tow bar
asked by: Rick H
Expert Reply:
The first thing you are going to want to do is consult the truck owners manual for specific information on flat towing it. There are different configurations of the 2003 GMC Sierra 1500 and would require different base plates.
If you have a Z71 model and the front suspension uses a torsion bar use # 199-6 or # 199-5.
If you have an HD model (torsion or coil springs) use # 3115-1 or # 3115-3.
If you do not have a Z71 or HD and have coil springs in the front use # 199-10 or # 199-11.
Any of the above base plates can be used with the Roadmaster Falcon 5250 tow bar. The tow bar is rated for 5,000 pounds so make sure that the truck weighs under that or you will not be able to use that tow bar. You will also need safety cables, # RM-653, rated for 10,000 pounds.
For lighting I recommend a simple magnetic kit, # RM-2120. With a magnetic kit you will not have to cut into the vehicle wiring for installation.
For a braking system I recommend the Roadmaster InvisiBrake, # RM-8700. Once the initial installation and set up is complete you will not have to mess with the system again like you would with portable systems. If using this braking system with the magnetic light kit, you will need to cut off the white wire from the 4-Way connector, light side, and ground the lights to the truck frame or negative battery terminal.
I have included a couple of helpful links to the right on flat towing for you.

Products Referenced in This Question
Roadmaster Crossbar-Style Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Hitch Pin Attachment
- Partially Hidden
- Roadmaster
more information >
Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Hitch Pin Attachment
- Partially Hidden
- Roadmaster
more information >
Roadmaster Crossbar-Style Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Hitch Pin Attachment
- Partially Hidden
- Roadmaster
more information >
Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Hitch Pin Attachment
- Partially Hidden
- Roadmaster
more information >
Roadmaster Crossbar-Style Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Hitch Pin Attachment
- Partially Hidden
- Roadmaster
more information >
Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Hitch Pin Attachment
- Partially Hidden
- Roadmaster
more information >
Roadmaster Universal Magnetic Tow Lights with 4-Way Flat Trailer Connector
- Flat Tow Wiring Harness
- Bypasses Vehicle Wiring
- Removable Tail Light Kit
- 20 Foot Long Harness
- Universal
- Magnetic Mount
- Roadmaster
more information >
Roadmaster 80" Coiled Safety Cables - Double Hook - 10,000 lbs - Qty 2
- Safety Cables
- Coiled Cables
- 80 Inch Long
- 10000 lbs GTW
- Snap Hooks
- Coated Cables
- Roadmaster
more information >
Roadmaster InvisiBrake Flat Tow Brake System - Preset
- Flat Tow Brake System
- Brake Systems
- Pre-Set System
- One-Time Setup
- Vehicle Battery
- Fixed System
- Power Assist Brake Compatible
- Air Brakes
- Hydraulic Brakes
- Indicator Lights
- Roadmaster
more information >
Product Page this Question was Asked From
Roadmaster Crossbar-Style Base Plate Kit - Removable Arms
- Tow Bar Base Plate
- Removable Draw Bars
- Hitch Pin Attachment
- Partially Hidden
- Roadmaster
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Shop: Base Plate for Tow Bar
- Shop: Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Shop: Vehicle Tow Bar Wiring
- Q&A: Best Base Plates for a 2002 GMC Sierra 1500HD 4WD
- Shop: Demco Commander II Non-Binding Tow Bar - RV Mount - 2" Hitch - 6,000 lbs
- Shop: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles - 7-Way to 6-Way Coiled Adapter Cord
- Video: Set up: Roadmaster Direct-Connect Base Plate Kit on a 2013 Chevrolet Silverado
- Video: Feature Breakdown: Roadmaster BlackHawk 2 All-Terrain Non-Binding Tow Bar
- Video: RoadMaster Blackhawk 2 All Terrain Tow Bar Road Test
- Video: Mount: Roadmaster 4-Diode Universal Wiring Kit for Towed Vehicles on a 2020 Chevrolet Suburban
- Search Results: tow bar
- Q&A: Tow Bar Recommendation for Use with Demco Base Plate on 2017 Jeep Cherokee
- Q&A: Parts Needed to Flat Tow 2009 GMC Sierra 1500 Behind Motorhome
- Q&A: Base plate and Tow Bar That Fits 2019 Jeep Cherokee Limited With Active Shutter System
- Q&A: Best Rock Guard for Flat Towing with Demco Excali-Bar II Tow Bar
- Shop: Roadmaster Nighthawk All-Terrain Tow Bar w/ LED Lights - Non-Binding - RV Mount - 8,000 lbs
- Shop: Roadmaster BlackHawk 2 All-Terrain Non-Binding Tow Bar - RV Mount - 2" Hitch - 10,000 lbs
- Shop: Demco Excali-Bar III Non-Binding Tow Bar - RV Mount - 2" Hitch - 10,500 lbs
- Shop: Roadmaster Direct-Connect Base Plate Kit - Removable Arms
- Q&A: Measurements of Tow Bar Base Plate Connection
- Q&A: 2001 GMC Sierra 2500HD 4x4 Base Plate Recommendation and Other Flat Towing Parts
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Search Results: base plate for tow bar
- Video: An In-Depth Look at the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit
- Shop: Vehicle Tow Bar Brake System
- Video: Installation: Blue Ox Patriot Portable Flat Tow Brake System on a 2022 Ford F-150
- Article: Best Vehicles to Flat Tow Behind an RV
- Video: An In-Depth Look at the Roadmaster Battery Charge Line Kit for Towed Vehicles
- Shop: Trailer Wiring