Full-service mobile diesel fleet maintenance
Keeping fleets moving through convenient, professional mobile maintenance and repair services at your yard or jobsite.
Preventive Maintenance
The most cost-effective thing you can do for your fleet
Unplanned breakdowns cost far more than scheduled maintenance. Sonoran Fleet Care builds custom PM schedules around your mileage and load cycles so your trucks stay on the road.
- Oil & filter changes (diesel-grade)
- Fuel filter replacement
- Coolant flush & hose inspection
- Tire rotation & pressure check
- DEF fluid service & SCR system checks
- Air filter & intake inspection
- Belt, pulley & tensioner inspection
- Multi-point safety inspection report
DOT Inspections & Compliance
Stay road-legal and audit-ready at all times
A failed DOT inspection means vehicles pulled from service, fines, and potential audit exposure. Sonoran Fleet Care performs thorough pre-inspections and annual certifications.
- FMCSA annual vehicle inspection
- Brake performance certification
- Tire & wheel end inspection
- Out-of-service defect repairs
- Pre-trip inspection verification
- Lighting & reflector compliance
- Steering & suspension check
Brake & Suspension Systems
Heavy-duty stopping power for heavy-duty loads
Brake and suspension failures are among the most common causes of DOT out-of-service violations. We service air brakes, hydraulic brakes, and full suspension systems.
- Air brake system inspection & repair
- Brake pad & shoe replacement
- Spring & leaf suspension service
- Disc & drum brake service
- ABS diagnostics & repair
- Shock absorber replacement
Cooling & HVAC Systems
Critical in Arizona's extreme desert heat
In Southern Arizona, cooling system failures don't just mean discomfort — they mean overheated engines. We service both engine cooling and cab HVAC.
- Radiator flush & pressure test
- Water pump service
- Cab A/C recharge & leak check
- Overheating diagnosis & repair
- Coolant hose inspection & replacement
- Thermostat replacement
- A/C compressor & condenser repair
Diesel Engine Repairs
Whether check engine light or component replacement — we know diesel
Our technicians specialize exclusively in diesel powertrains — Cummins, Detroit, International, Paccar, and more. We diagnose accurately and fix it right the first time.
- Engine diagnostics (OBD & advanced scan)
- EGR valve service & replacement
- Fuel injector cleaning & replacement
- DPF cleaning & replacement
- Turbocharger repair & replacement
- Engine in-situ component replacements
Electrical & Starting Systems
Keep the power flowing — no dead trucks on job sites
Modern diesel trucks are loaded with electronics. Our techs are trained in commercial electrical diagnosis and trace faults fast.
- Battery testing & replacement
- ECM diagnostics & programming
- Lighting systems (DOT compliance)
- Alternator & starter repair
- Wiring harness inspection & repair
- Power takeoff (PTO) systems
Fleet maintenance program tiers
Choose a plan that fits your fleet size and operational needs. All plans include a free initial assessment.
Essential
Best for small fleets of 3–10 vehicles needing reliable scheduled maintenance.
- Priority scheduling
- PM reminders & tracking
- Digital service history
- Dedicated service contact
Professional
For fleets of 10–30 vehicles requiring full-service management and compliance support.
- Everything in Essential
- DOT inspection scheduling
- Monthly fleet health report
- Discounted labor rates
- Emergency priority slots
Enterprise
For fleets of 30+ vehicles or multi-location operations needing a full-service partner.
- Everything in Professional
- On-site fleet visits available
- Custom SLA agreements
- Dedicated account manager
