RV Maintenance & Service in St. Charles, MO
Complete RV Service & Body Shop provides bumper-to-bumper RV maintenance and service for motorhomes, travel trailers, fifth wheels, toy haulers and campers. Our RVDA-certified technicians handle preventative maintenance, roof inspections and repair, plumbing, A/C, winterizing and pre-trip inspections on all makes and models in a 15-bay shop at 3309 New Town Blvd, St. Charles, Missouri, serving RV owners across the St. Louis area.
- 5.0★ ~250 Google Reviews
- 15 Oversized Service Bays
- RVDA Certified Technicians
- Since 1973 Family Owned
Prevent Breakdowns Before They Happen
Routine RV maintenance keeps your rig safe, reliable and ready for the road. Small problems like a worn brake, a slow roof leak or a failing water pump get expensive fast when they're missed. A scheduled inspection catches them early and protects the value of your RV.
At Complete RV, one shop handles everything: oil changes, wheel alignments, brake inspections, fluid checks, roof inspections, plumbing, air conditioning and full computer diagnostics. We also honor manufacturer warranties whenever applicable, so you don't have to drive across the state to a dealer.
The Barks family has been fixing vehicles since 1973 and has served St. Charles since 1975. That's more than 50 years of honest recommendations and work done right the first time.
Our RV Maintenance Services
Every service is performed in one of our 15 oversized bays by technicians who work on RVs every day. Jump to: roof · plumbing · A/C · winterizing · pre-trip inspections
Preventative RV Maintenance
Scheduled maintenance that catches small issues before they become roadside breakdowns. We follow your chassis manufacturer's service intervals and inspect the systems that wear out first.
- Oil and filter changes
- Wheel alignments
- Brake inspections and service
- Fluid checks and top-offs
- Full computer diagnostics
- Roof inspection, cleaning and spot sealing
RV Roof Inspection & Repair
Roof leaks are one of the most common and costly RV problems, because water gets into the walls and floor long before you see it inside. We inspect your roof and, depending on what we find, clean it, spot seal it, perform annual roof service or replace it entirely.
- Roof inspections
- Leak repair and spot sealing
- Vent, seam and edge sealing
- Annual roof service
- Full roof replacement
Hail or storm damage? See RV hail & collision repair →
RV Plumbing Repair
Water damage is one of the most expensive problems an RV can have. We inspect, maintain and repair your plumbing system to stop leaks before they rot floors and walls.
- Fresh water supply lines
- Water heaters
- Water pumps
- Drains and waste systems
- Leak detection and repair
RV Air Conditioning Service
Missouri summers are brutal on RV A/C units. We clean, test and repair your system so it keeps you cool all season.
- Rooftop A/C units
- Ventilation systems
- Thermostats
- A/C electrical components
- Cleaning and full system checks
RV Winterizing & De-Winterizing
One hard freeze can crack water lines and fittings. Winterizing typically takes 1 to 2 hours. Book by mid-October to beat the late-fall rush, and schedule spring de-winterizing in March or April before your first trip.
- Draining all water systems
- Adding RV antifreeze
- Protecting plumbing lines
- Inspecting freeze-vulnerable components
RV Pre-Trip Inspections
Leave for your trip with confidence. Our pre-trip inspection covers the safety items that cause most roadside breakdowns.
- Tires and brakes
- Electrical systems
- Plumbing
- Fluid levels
- Safety equipment
Tires worn or aging? We sell and install RV, truck & car tires →
RV Detailing
Protect your finish and bring back the shine. We clean, polish and detail your RV inside and out.
- Exterior washing and polishing
- Interior cleaning and detailing
- Shine protection
How Often Should My RV Be Serviced?
Most RVs need an annual service inspection. Mileage-based maintenance follows your chassis manufacturer's recommendations.
| Service | Recommended Timing |
|---|---|
| Oil, filters & fluids (gas) | Every 5,000–7,500 miles |
| Oil, filters & fluids (diesel) | Every 10,000–15,000 miles |
| Annual inspection: brakes, bearings, seals, slide-outs, awnings & roof | Once a year |
| Winterizing | Fall (book by mid-October) |
| De-winterizing | Spring (March or April) |
| Pre-trip inspection | Before every major trip |
Always check your owner's manual. Our technicians can build a schedule for your specific RV.
Getting Your RV Serviced Is Simple
- Call or Request ServiceCall 636-246-8932 or request service online to book a drop-off appointment.
- Drop Off Your RVBring it to our St. Charles shop. We have room for big rigs in our 15 oversized bays.
- Inspection & EstimateWe inspect your RV, explain what we find and give you an estimate before any work begins.
- Back on the RoadWe complete the work, walk you through it and get you ready for your next trip.
The Crew Behind Your RV
Our I-CAR, ASE and RVDA-certified technicians work on RVs every day in our 15-bay St. Charles shop. Family owned since 1973.
St. Charles' One-Stop RV Service Center
- RVDA-certified technicians using computer diagnostic equipment
- 15 oversized service bays for every RV class
- All makes and models serviced
- Manufacturer warranties honored whenever applicable
- Estimates before work begins, with no surprises
- Family owned since 1973, rated 5.0★ on Google
On-Site RV Amenities
- RV dump station
- Propane filling station
- Fresh water filling station
- On-site dog park
Need more than maintenance? We also handle RV body, paint & collision repair, RV tires, RV parts & accessories, secure RV storage and auto & truck repair.
RV Maintenance Questions, Answered
What types of RVs do you service?
We service all classes of RVs: Class A, Class B and Class C motorhomes, travel trailers, fifth wheels, toy haulers and campers. Our technicians work on all makes and models.
How often should my RV be serviced?
Most RVs need an annual service inspection covering brakes, bearings, seals, slide-outs, awnings and the roof. Oil, filters and fluids follow the chassis manufacturer's schedule, typically every 5,000 to 7,500 miles for gas engines and 10,000 to 15,000 miles for diesel.
Do I need an appointment for RV maintenance?
Yes. We recommend booking a drop-off appointment so our technicians can inspect your RV and explain recommended repairs before work begins. Call 636-246-8932 to schedule.
Do you honor RV manufacturer warranties?
Yes. We honor manufacturer warranties whenever applicable. Bring your warranty paperwork and we'll coordinate with the manufacturer.
How long does RV winterizing take?
Winterizing typically takes 1 to 2 hours. Book by mid-October to avoid the late-fall rush, and schedule de-winterizing in March or April before your first spring trip.
Do you give estimates before starting work?
Yes. After inspecting your RV, we explain what we found and provide an estimate before any work begins.
Where is Complete RV located and what areas do you serve?
We're at 3309 New Town Blvd, St. Charles, MO 63301, open Monday through Friday, 7:30 AM to 5:00 PM. We serve RV owners across St. Charles, St. Peters, O'Fallon, Wentzville, Lake St. Louis and St. Louis, plus St. Charles, St. Louis, Warren and Franklin counties.
Can you also fix RV roof leaks?
Yes. A roof inspection is part of our maintenance service. Depending on what we find, we can clean, spot seal, perform annual roof service or replace the roof entirely.
How much does RV maintenance cost?
It depends on your RV's size, type and condition, and on what the inspection finds. We inspect your RV first, explain what we found and give you an estimate before any work begins, so you approve the cost up front. Call 636-246-8932 to book an inspection.
What's included in an RV pre-trip inspection?
Our pre-trip inspection covers the items behind most roadside breakdowns: tires and brakes, electrical systems, plumbing, fluid levels and safety equipment. Book it a week or two before you leave so there's time to fix anything we find.
Can you replace my RV tires during service?
Yes. We sell and install RV, truck and car tires, so worn or aging tires can be replaced while your RV is already in the shop.
I'm traveling through the St. Louis area. Can you help?
Yes. RVers passing through St. Louis are welcome. We're at 3309 New Town Blvd in St. Charles, near Highway 370. Call 636-246-8932 to check availability.
More questions? See our full RV FAQ or read customer reviews.