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Fleet

Fleet maintenance checklist for small Arizona businesses

Downtime kills small businesses. Here's the monthly / quarterly / annual schedule we use with our fleet customers to keep service vehicles on the road.

May 20, 2026 8 min read

For a contractor, landscaper, plumber, or any small business running 3 to 10 vehicles in the Valley, a truck in the shop isn't just a repair bill, it's a missed job, a frustrated customer, and sometimes a lost contract. We've built our fleet program around one principle: scheduled service that prevents the breakdown is always cheaper than the breakdown.

Here's the schedule we run with our fleet customers. Adapt the cadence to your mileage, these intervals assume each vehicle puts on roughly 1,000–1,500 miles a month, which is typical for a service vehicle in the East Valley.

The monthly check (you or your driver, 15 minutes per vehicle)

This is what you should be doing in-house. None of it requires tools beyond a tire gauge and a flashlight.

  • Tire pressure, all four tires plus the spare. Check cold. AZ heat swings tire pressure by 5+ PSI between morning and afternoon; the cold reading is what matters.
  • Tire tread, use the penny test (Lincoln's head, upside down). If you can see all of his head, it's time.
  • All exterior lights, headlights (low and high), brake lights, turn signals, reverse, license plate. A driver should test these as part of pre-trip.
  • Wipers, quick visual. AZ sun kills wiper blades faster than rain does.
  • Fluid levels, engine oil, coolant, brake fluid, power steering, washer. Top off washer; flag anything else for the shop.
  • Belts and hoses (visual), look for cracks, fraying, soft spots. Don't touch a hot engine, visual only.

The quarterly visit (every ~3,000–5,000 miles)

This is the workhorse of the schedule. Most issues that would have grounded a vehicle get caught here.

  • Oil and filter change, synthetic for most modern engines, with the right viscosity for AZ summer.
  • Tire rotation, keeps wear even, extends tire life by 30–50%.
  • Brake inspection, pads measured at all four corners, rotors checked.
  • A/C check, especially before May. Vent temps, fan operation, system pressures if anything seems off.
  • Battery test, load test, not just voltage. Heat kills batteries; most fleet batteries die in summer 2 (year two of a 5-year battery in AZ).
  • Air filter and cabin filter, desert dust loads them fast. We replace cabin filters at roughly 2x the textbook interval.
  • Visual under-vehicle inspection, leaks, suspension components, exhaust, CV boots.

The annual or 12,000–15,000 mile service

  • Transmission service, fluid and filter. We see automatics in heat-stressed service vehicles fail decades early when this is skipped.
  • Coolant flush, every 2 years or 30,000 miles depending on type. Critical in AZ.
  • Brake fluid flush, every 3 years at most; in fleet applications we lean toward every 2.
  • Full diagnostic scan, pull every code, not just the ones triggering a dash light. Pending and history codes catch problems before they become dash lights.
  • Steering and suspension, ball joints, tie rods, bushings, shocks/struts. AZ roads + heavy service loads = parts wear faster than passenger-car schedules suggest.

What to keep in the truck

Forget the elaborate emergency kit nobody uses. Just these:

  1. A working spare and the tools to change it (lug wrench, jack).
  2. Jumper cables or a jump pack.
  3. 1 gallon of water for the radiator (and for you).
  4. A flashlight with fresh batteries.
  5. The shop's number on a sticker in the visor.

Records you should be keeping

For each vehicle, a one-page log per quarter:

  • Date, mileage, work performed.
  • Parts replaced.
  • Cost.
  • Next service due (date + mileage).

This pays off three ways: (1) you can prove the maintenance history when you sell or trade the vehicle, (2) you can spot a vehicle that's becoming a money pit before you've sunk too much into it, and (3) warranties on parts depend on it.

How our fleet program works

For fleet customers we do three things differently from walk-in service:

  • Net-15 terms, we invoice, you pay net-15. No credit card swipes per visit.
  • Priority scheduling, fleet vehicles get same-day or next-day slots when possible. We know downtime costs you more than it costs us to find the room.
  • Approval threshold, we call you before anything over $400. You're never surprised at pickup.

If you're running a small fleet in the East Valley and want a single-shop relationship, give us a call. We'll set up an initial inspection on each vehicle and build a service schedule from there.

Got a problem now?

Bring it in. We'll take a look.

Same-day diagnostics when we can, honest answers either way. Hablamos español.

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