GARGOSHENAUTOMOTIVE REPAIR 520-990-1033
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TUCSON · MOBILE RV CHASSIS REPAIR

RV & motorhome chassis repair.

From Sprinter camper vans to 45-foot diesel pushers, we repair the engine, transmission, brakes and cooling where your RV is parked: at home, in storage or at the RV park.

Find your RV type RV down? 520-990-1033
  • 5RV classes
  • Gas + dieselchassis & powertrain
  • MobileRV parks & storage
  • $198–$298per hour by class

WHICH RV DO YOU HAVE?

Find your RV type.

Pick your class to see the common chassis and engines, what we see most and your rate class.

2020s Ford Transit motorhome
2020s · Ford Transit
17–24 ft · up to ~11,000 lb GVWRClass 2–3 · $198/hr

Camper vans

Class B

A motorhome built inside a full-size van. The coach brand and the van underneath are often different companies, so we identify the van chassis first.

Common chassis
Mercedes-Benz Sprinter, Ford Transit, Ram ProMaster
Engines
Sprinter diesel (3.0L V6 / 2.0L I4), Ford 3.5L EcoBoost, Ram 3.6L Pentastar
Drivetrain
RWD, AWD or 4x4 (Sprinter, Transit)

What we see most

  • Sprinter AdBlue (DEF), DPF and NOx sensor faults
  • Brakes working hard under a full camper build
  • Transmission heat on heavy builds
  • Engine-driven cab A/C
Plan service for my Class B Sprinter field guide

Lengths and weights are typical ranges; your chassis plate (GVWR) sets the rate class. The coach and chassis can have different model years.

WHAT WE DO

The mechanical side of your motorhome.

  • Engine & powertrain

    Gas and diesel engine diagnosis and repair, no-starts, overheating, low power and check engine lights.

  • Transmission & driveline

    Allison and Ford transmission service, shift concerns, driveshafts, U-joints and differentials.

  • Brakes & wheel ends

    Hydraulic and air brake inspection and repair, rotors, drums, bearings and seals.

  • Diesel emissions

    DPF, DEF/AdBlue, EGR and NOx sensor faults on 2007+ diesel coaches and vans.

  • Cooling systems

    Radiators, charge-air coolers, fan clutches, belts and hoses, critical for desert travel.

  • Chassis & dash A/C

    Engine-driven cab and dash air conditioning (not rooftop units).

  • Chassis maintenance

    Oil, fuel filters, coolant, transmission and differential fluids by chassis.

  • Pre-trip inspections

    A full chassis check before a long trip or the season.

Outside our scope

Living-area systems

We’re chassis and powertrain mechanics. For these, call an RV technician:

  • Rooftop A/C units
  • Generators
  • Slide-outs and leveling jacks
  • Plumbing, tanks and water heaters
  • Coach electrical, inverters and appliances
  • Roof, body and interior repairs

BUILT FOR THE DESERT

What Tucson heat does to an RV.

Snowbird season and summer heat are hard on big rigs. These are the four things we check first.

  • 01

    Cooling stack

    Rear radiators and charge-air coolers on pushers pack with dust and bugs. A clogged stack is the top cause of summer overheating.

  • 02

    Tires & sun

    Tires can age out before they wear out, and UV cracks sidewalls. We check date codes, pressures and sidewalls on every inspection.

  • 03

    Batteries

    Heat kills chassis batteries fast. We load-test them before the season and before long trips.

  • 04

    Long grades

    Climbing out of Tucson in the heat works the transmission and brakes hard. Fresh fluid and good brakes matter.

Season & pre-trip

RV pre-trip chassis inspection.

Heading out for the season or coming back to Tucson for the winter? We inspect the chassis where your RV is parked and give you a written list of anything that needs attention.

Book a pre-trip inspection →
  • Engine oil, coolant and transmission fluid levels and condition
  • Belts, hoses and radiator / charge-air cooler stack
  • Brakes, wheel bearings and air system (if equipped)
  • Steering, suspension, shocks and air bags
  • Tire date codes, pressures and sidewalls
  • Chassis batteries load-tested
  • Lights, wipers and dash A/C
  • Scan for stored codes and pending faults

HOW MOBILE RV SERVICE WORKS

A clear plan before we arrive.

  1. Step 1

    Share your RV & location

    RV class, chassis, engine, what happened and where you’re parked, including the site number at an RV park.

  2. Step 2

    We confirm access

    We check the work location, level ground, space and equipment before scheduling, and confirm the park allows mobile repair.

  3. Step 3

    Diagnose on site

    We come to you with scan tools for gas, diesel and Allison systems and find the cause.

  4. Step 4

    Approve the estimate

    You get a written estimate with parts and labor before any repair work starts.

Have these ready

  • RV class, year, make and model
  • Chassis make and chassis VIN (on the chassis plate)
  • Gas or diesel, engine model and mileage
  • Transmission model and engine serial number, if available
  • Symptoms, warning lights and fault codes
  • Coach length, location and access restrictions

OWNER QUESTIONS

RV service questions.

Is my RV model year enough to find parts?

Not always. The coach and its chassis can have different model years. Share the chassis VIN from the chassis plate, plus the engine and transmission details.

Can every repair be done where my RV is parked?

Most can. The work has to suit the location, ground and equipment needed. We confirm that before scheduling; a few big jobs need a different work location.

Do you fix rooftop A/C, generators or slide-outs?

No. We work on the chassis and powertrain: engine, transmission, driveline, brakes, cooling, emissions and the engine-driven dash A/C. Living-area systems need an RV technician.

Can you come to my RV park or storage lot?

Yes, if the park or lot allows mobile repair at your site. Ask the office, and send us the site number when you book.

What does RV service cost?

Labor is by the chassis weight class: $198/hr for Class 2–6 and $298/hr for Class 7–8 (most diesel pushers). Parts are itemized on your written estimate. See rates →

My diesel pusher is overheating. What should I check?

Pull over safely and let it cool. On rear-radiator coaches, a clogged radiator or charge-air cooler stack is the most common cause in the desert, followed by fan clutch, belt and coolant issues. Call us and we’ll come to you.

Do you service Sprinter-based camper vans?

Yes, including AdBlue/DEF, DPF and transmission service on the Sprinter chassis. Sprinter field guide →

READY WHEN YOU ARE

Let’s get your RV back on the road.

Send your RV class, chassis and location. We’ll confirm access and send a written estimate.

Request service Call 520-990-1033
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