Complete Diesel Pusher Service in Lakeland, FL
Class A Diesel Pushers are the most complex recreational vehicles on the road. With a rear-mounted diesel engine, a commercial-grade chassis, a full-house electrical system, and a residential living space built on top, these coaches demand technicians who understand every layer of the machine. At Nationwide Haul in Lakeland, FL, that is exactly what we deliver.
We work on all major chassis platforms including Freightliner (XCR, XCS, XCM), Spartan (K1, K2, K3), and Prevost (H3-45, X3-45) foundations. Whether your coach rides on a Cummins ISB, ISL, or ISX diesel, or a Caterpillar C7 or C9 platform, our ASE Master Certified technicians have the training and 2026 diagnostic technology to service it correctly the first time.
What sets us apart is that we handle both the chassis and drivetrain AND the living space under one roof. Most shops force you to visit one facility for mechanical work and another for coach systems. At Nationwide Haul, one team manages your entire coach—from the tag axle to the rooftop A/C units. That means better communication, faster turnarounds, and a single point of accountability for your half-million-dollar investment.
Diesel Pusher Services We Provide
Chassis & Drivetrain
The heart of your diesel pusher is a commercial-grade powertrain that demands commercial-grade expertise. We service Cummins ISB 6.7, ISL 8.9, and ISX 15-liter engines as well as Caterpillar C7 and C9 platforms found in older coaches. Our drivetrain services include Allison 3000 and 4000 series automatic transmission service and repair, driveline inspection and U-joint replacement, exhaust aftertreatment systems including DPF regeneration and DEF system diagnostics, turbocharger service, fuel system diagnostics, and complete engine performance tuning. Every diagnosis starts with factory-level scan tools that read the engine ECM, transmission TCM, and chassis ABS modules to give us the full picture before we recommend any work.
Suspension & Ride Quality
A diesel pusher that rides rough is more than uncomfortable—it accelerates wear on cabinetry, slide-out mechanisms, and every fitting in the living space. We service and repair full air ride suspension systems, automatic leveling systems (HWH, Valid, Lippert), shock absorbers, and offer performance upgrades with Bilstein and Koni components for owners who want a tighter, more confident ride. We also handle tag axle service and alignment, sway bar inspection, and air bag replacement. Our Hunter alignment equipment ensures your coach tracks straight and true—protecting tire life on those expensive 22.5-inch steer tires.
Living Space Systems
Your diesel pusher is not just a vehicle—it is your home on the road, and the living space deserves the same level of care as the chassis beneath it. We perform thorough roof inspections and resealing to prevent water intrusion, one of the most costly problems a coach owner can face. Our technicians service slide-out mechanisms (Schwintek, HWH hydraulic, rack-and-pinion), awning motors and hardware, and all major appliance brands including Dometic and Coleman rooftop A/C units, residential refrigerators, water heaters, and washer/dryer combos. We also handle plumbing systems from the fresh water tank through the waste valves, including winterization and de-winterization for seasonal travelers.
Electrical & Diagnostics
Modern diesel pushers use multiplex wiring systems that integrate dozens of electronic modules throughout the coach. A single communication fault can cascade into multiple symptoms—from phantom warning lights to slide-outs that refuse to extend. Our technicians use factory-level scan tools capable of reading every onboard module, including the Spyder multiplex system (Tiffin), the VeloCiti system (Newmar), and Firefly systems (REV Group). We service and repair inverter/charger systems (Magnum, Xantrex), house battery banks (lithium and AGM), chassis battery systems, solar charge controller integration, transfer switches, and generator integration with Onan QD and QG gensets. Whether it is a parasitic draw draining your batteries overnight or a shore power transfer relay that will not engage, we have the diagnostic depth to find and fix it.
Brands We Service
Our technicians have hands-on experience with the most respected names in the diesel pusher segment. We regularly service coaches from Tiffin (Allegro Bus, Phaeton, Zephyr), Newmar (Dutch Star, Mountain Aire, King Aire, Essex), Entegra (Aspire, Anthem, Cornerstone), Foretravel, Prevost (Liberty, Marathon conversions), Monaco (Dynasty, Diplomat), Fleetwood Discovery (Discovery, Discovery LXE), Thor Tuscany, and Winnebago (Forza, Journey, Horizon). Regardless of the badge on the back, if it is built on a diesel pusher chassis, we have the training and tooling to service it properly.
Why Diesel Pusher Owners Choose Nationwide Haul
- ASE-Certified Master Technicians with specialized diesel pusher training across Freightliner, Spartan, and Prevost chassis platforms
- 2026 Diagnostic Technology reads every onboard module—engine, transmission, ABS, multiplex, leveling, and generator systems
- Warranty-Friendly — we work with extended warranties and RV protection plans including Good Sam, Wholesale Warranties, and coach manufacturer programs
- Total RV Care — chassis AND living space serviced under one roof, by one team, with one point of contact
- Honest Estimates — transparent, detailed pricing before any work begins, so there are never surprises on your invoice
Stuck on the Road?
If your diesel pusher has broken down on I-4, US-98, or anywhere in Central Florida, our RV roadside assistance team can come to you. We understand that a disabled 40-foot coach on a highway shoulder is a stressful situation—especially with family on board. Our mobile service technicians will arrive equipped to diagnose the issue on-site and either perform a roadside repair or arrange a safe tow back to our Lakeland facility for major work. Your safety and your coach are in good hands.