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Fleetwood RV Frontier GTX Motor Home Class A - Diesel RVs For Sale

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You won’t miss home at all when you take off in the Frontier GTX Class A diesel motorhome! You’ll enjoy interior amenities like three 15,000-BTU air conditioning units, porcelain tile throughout, and a fully equipped kitchen with residential refrigerator, convection microwave, and induction cooktop.


Built on a Freightliner® custom chassis, this motorhome offers a Cummins 6.7L diesel engine. Exterior construction features include a painted steel frame chassis, high density polystyrene insulated sidewalls, and a premium gel exterior fiberglass skin. Spacious pass-through storage beneath offers plenty of room for your gear, while heated fresh water and holding tank compartments enable you to travel even if the weather gets chilly.


The Fleetwood Frontier GTX is the perfect Class A diesel motorhome for work and play!

  • Frontier GTX 37RT

    Frontier GTX 37RT Floorplan Image

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    Fleetwood RV Frontier GTX Class A diesel motorhome 37RT highlights: Exterior ... more about Frontier GTX 37RT

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    Sleeps 6
    Slides 3
    Length 37 ft 11 in
    Ext Width 8 ft 6 in
    Ext Height 12 ft 10 in
    Int Height 7 ft
    Interior Color Cadet, Coventry, Sandcastle
    Exterior Color Abeline, Bandit, Explorer, Spring Creek, Wichita
    Hitch Weight 10000 lbs
    GVWR 33600 lbs
    Fresh Water Capacity 95 gals
    Grey Water Capacity 65 gals
    Black Water Capacity 45 gals
    Tire Size Front 275/80R 22.5H; Rear 255/80R 22.5
    Generator 8000W Onan Quiet Diesel
    Fuel Type Diesel
    Engine Cummins 6.7L
    Chassis Freightliner
    Horsepower 360 hp
    Fuel Capacity 100 gals
    Wheelbase 238 in
    Available Beds King
    Torque 800 ft-lb
    Refrigerator Type Stainless Steel Residential
    Cooktop Burners 2
    Shower Size 38" x 30"
    Number of Awnings 1
    Axle Weight Front 12600 lbs
    Axle Weight Rear 21000 lbs
    Water Heater Type AquaHot 400D
    AC BTU 45000 btu
    TV Info LR Pop-Up LED TV, BR LED TV, Ext. LED TV
    Awning Info 20' Legless Electric Patio w/ LED Lighting and Motion Sensor Retract
    Washer/Dryer Available Yes
    Gross Combined Weight 43600 lbs
    Shower Type Shower w/Seat
    Electrical Service 50 amp

    Similar Floorplans

Frontier GTX Features:

Standard Features (2024)



  • Freightliner Custom Chassis®
  • Chassis Model XCR
  • Freedom Sport Bridge
  • Engine Cummins® B6.7
  • Horsepower 360
  • Torque 800
  • Transmission Allison® 3000 MH 6-Speed w/ Electronic
  • Shift Control
  • Allison® 3000 MH 6-Speed w/ Electronic Shift Control
  • Alternator 160 Amp
  • Wheel Cut 55°
  • Front Tires 275/80R 22.5H 
  • Rear Tires 255/80R 22.5H
  • Front Brakes Air Drum w/ABS
  • Rear Brakes Air Drum w/ABS
  • Front Suspension VFS
  • Rear Suspension V-Ride Air

Chassis Components

  • Power Assisted Steering
  • (2)12V Heavy Duty Chassis Batteries
  • Brake Sync (FCCC) (option)
  • Tire Pressure Monitoring System
  • Valve Stem Extensions
  • Front and Rear Aluminum Wheels
  • Tuned SACHS® Shocks
  • CSA Package - FCCC (option)


  • Front Generator Access
  • Steel Constructed Entry Step Box
  • Powerlock System 2 - Interlocking Walls to Roof
  • Full Coverage Heavy Duty Undercoating
  • Full Pass Through Basement Storage w/Composite Floor Construction
  • High Density Polystyrene Insulated Sidewalls, Roof and Floor
  • Quiet Insulated, Ducted A/C System
  • Vacu-Bond Aluminum Framed Constructed Sidewalls, Roof and Floors
  • Premium Gel Exterior Vetrosina Fiberglass Skin (No Wood Substrate)
  • Electric Slideout Systems
  • Painted Steel Frame Chassis Construction
  • Dryseal Edge Coating for all Ceilings, Walls and Floors 
  • Heated Fresh Water and Holding Tank Compartments (w/Aqua Hot Operational)


  • TPO Roof
  • Front, Side and Rear Clearance and Marker Lighting
  • Porch Light w/Interior Switch
  • Automatic Hydraulic Leveling Jacks
  • Automatic Entrance Steps
  • Rear Ladder 
  • 7-Way Round Tow Connection
  • Fiberglass Rear Cap Assembly
  • Basement Storage LED Lighting
  • Unidirectional HD On-Air Antenna
  • Lighted Acrylic Grab Handle at Entry Door
  • Slideout Awning Toppers Above All Slideouts
  • Patio Lighting
  • Legless Electric Patio Awning w/LED Lighting and Motion Sensor Retract
  • King Universal Stationary Satellite (option)
  • Fiberglass Front Cap Assembly
  • Powered Entrance Awning w/LED Lighting
  • Front and Rear Mud Flaps 
  • ABS Wheel Well Trims
  • 4-Color Premier Full Body Paint
  • Roof Vent Rain Covers (option)
  • Full Bay 90" Slide Tray (option)
  • Oversized Dark Tinted Frameless Windows
  • Exterior Park Cable and Satellite Hookup
  • Oversized Baggage Doors W/Locking Handles
  • Entry Door w/Radiused Upper, Deadbolt and Screen Door
  • Exterior Service Station - Includes: Water Pump Switch, Exterior Shower, Black Tank Flush, City Water Hookup, Towel Holder and Drainage Valves
  • Rear Under Hood Utility Light 

Cab Exterior

  • Top Mount Automotive Style Windshield Wiper System
  • Automotive One Piece Bonded Windshield
  • Tinted Slider Driver Window
  • Front Mount, Remote Power/Heated Mirrors w/Turn Signals and Side Cameras
  • Lower Front Clear Protective Film


  • Sofa w/Queen Sleeper Bed
  • Porcelain Tile Flooring 
  • Stackable Washer and Dryer (N/A 37RT; option 39TA)
  • 120V/USB Receptacles 
  • Manual Day/Night Roller Shades 
  • Washer and Dryer (option 37RT; N/A 39TA)
  • Electric Fireplace (Living Area) (N/A 39TA)
  • Full Extension Drawer Guides w/Latches 
  • Energy Efficient LED 3" Flush Mount Ceiling Lighting 
  • Free Standing Dinette w/Credenza (option)
  • Coordinating Window Treatments 
  • Accent Lighting 
  • Facing Dinette Booth (N/A 37RT; option 39TA)
  • Adapt-table® Dinette (N/A 37RT)
  • Hidden Hinge Cabinet Doors S S
  • The Corner Office (option 37RT; N/A 39TA)
  • Power Motion Lounge (option)
  • Jack-Knife Dinette Booth (N/A 39TA)
  • Interior Soft Touch Vinyl Ceiling

Interior Entry

  • Entry Door Manual Roller Shade and Blind
  • Power Entry Step Cover
  • Entry Step w/LED Accent Lighting
  • Battery Disconnect Switch at Entry Console
  • Metal Interior Grab Handle

Electric and Utilities

  • Water Accumulation System
  • CO and Smoke Detectors, Fire Extinguisher
  • High Capacity Water Pump 
  • Multiplex Wiring System 
  • Generator: 8000W Onan Quiet Diesel 
  • Energy Management System (EMS) 
  • Water Filtration System (Whole Coach) 
  • Inverter: Single 2000W Pure Sine w/Remote 
  • Air Conditioners:(3)15,000 BTU Roof Mount, Ducted w/Chill Grill and Rear Heat Pump
  • Generator Auto Changeover 
  • Batteries:(4) 6V Deep Cycle House Batteries 
  • Aqua-Hot 400D 
  • Transfer Switch w/Surge and Reverse Polarity Protection 
  • Electric Power Cord Reel (option)
  • Cable TV/Satellite Hookup
  • Neutral Loss Protection
  • Service Panel: 50 Amp,120 Volt
  • Black Holding Tank San-T-Flush System
  • Auto Gen Start
  • Gravity Water Fill
  • Power Converter: 60 Amp
  • Central Vacuum System (option)


  • Single-Bowl, Stainless Steel Farmhouse Sink
  • Full Extension Drawer Guides w/Latches
  • Adjustable Shelving
  • Polished Solid Surface Sink Covers
  • Polished Solid Surface Galley Countertop
  • Waste Basket
  • Stainless Steel OTR Convection Microwave
  • Pantry Storage
  • Stainless Steel Residential Refrigerator
  • Power Vent
  • 2-Burner Recessed Induction Cooktop 
  • Shadow Box Glass Tile Backsplash w/Window and Shade
  • Residential Faucet w/Pullout Sprayer


  • CPAP Prep In Bedroom Overhead 
  • Individual Reading Lights at Bed Overhead 
  • Encore Series King Bed 
  • Spacious Wardrobe Storage w/Hardwood Doors
  • 120V/USB Receptacles at Nightstands
  • Designer Bedspread and Pillows w/Shams
  • Headboard 
  • Remote Generator Start Switch


  • Designer Shower Head Assembly 
  • Medicine Cabinet w/Mirror 
  • Towel Ring(s) and Toilet Paper Holder 
  • Porcelain Toilet w/Macerator 
  • Power Vent(s) 
  • Residential Sink(s)
  • Glass Shower Door 
  • Fiberglass Shower 
  • Solid Surface Lavy Top(s) 
  • Showermiser 
  • Porcelain Toilet (N/A 37RT)
  • Residential Faucet(s)
  • Manual Night Roller Shade(s)
  • Shower Skylight 


  • Exterior Entertainment Center w/LED TV and Bluetooth® Soundbar
  • LED TV(Living Area) (N/A 37RT)
  • Soundbar TV Sound System (Living Area) 
  • LED TV(Front Overhead) (option)
  • Pop-up LED TV(Living Area) *(N/A 39TA)
  • LED TV(Bedroom)

Cab Interior

  • Color Backup Monitor 
  • Driver Console w/Lower Storage Bin
  • Driver and Passenger Overhead Storage Cabinetry
  • 12Vand USB Accessory Ports
  • LED Optiview Instrument Panel
  • Hide-A-Loft™ Power Drop-Down Overhead Bunk w/LED TV (option)
  • Momentary Battery Booster Switch - Connecting Chassis and House Batteries
  • Electronic Cruise Control
  • Air Suspension Deflation System
  • Driver and Passenger Side Manual Roller Shades and Blinds
  • 10.2" Stereo w/Touch Screen w/AM/FM/CD/DVD/Bluetooth/Navigation/APP Store/WiFi
  • Front Power Roller Blind 
  • Switch for Exterior Service Lights 
  • Sirius/XM Satellite Radio Ready (Requires Subscription) 
  • Dash Air Conditioning and Heat 
  • Passenger Seat w/Reclining Back, Swivel, 6-way Power Controls and Power Footrest (option)
  • Automatic Leveling Jacks Touchpad Controls
  • Map Lights
  • Seat Belts - 3 Point Driver and Passenger
  • Passenger Console
  • Radio Switch Main/Auxiliary Power at Dash
  • Driver Seat w/Reclining Back, Swivel and 6-way Power Controls
  • Electric Alert Horn
  • Switch for Power/Heated Mirrors 
  • Passenger Seat w/Reclining Back, Swivel, 6-way Power Controls and Manual Footrest
  • Windshield Wipers w/Delay
  • Automotive Style Wrap Around Dash
  • 120VAC Outlet at Dash and Passenger Area
  • Keyless Entry w/Remotes

Please see us for a complete list of features and available options!

All standard features and specifications are subject to change.

All warranty info is typically reserved for new units and is subject to specific terms and conditions. See us for more details.

Due to the current environment, our features and options are subject to change due to material availability.


Fleetwood is one of the oldest names in the RV industry. We’ve been around for over 65 years—more than double most of our competition. And that resilience speaks to our product. After all, a company can’t stay in business if they build something people don’t believe in. 


Inherently motorhomes are just that—a little bit vehicle, a little bit house. So at Fleetwood, we engineer and build them with both in mind. Our innovation shows we perfectly balance and blend the two. And that smarter design means a better RV.