1985 Autocar — we work on any truck
If it runs diesel and needs help, we'll show up. Age is not a barrier — classic, vintage, or modern.
Fleet Maintenance Programs
Fleet Maintenance Contracts in Charleston, SC.
Stop reacting to breakdowns and start scheduling around them. A fleet maintenance program from Lowcountry Diagnostics puts your diesel units on set PM intervals, moves you to the front of the line when something goes down, and turns unpredictable repair bills into a cost you can budget — all serviced on-site at your yard.
- Scheduled PM intervals tailored to each unit and route
- Priority service and predictable, budgetable cost
- Charleston, North Charleston, Summerville, Goose Creek, Mount Pleasant
What a Program Delivers
Maintenance on a schedule, not on a surprise
Scheduled intervals
Each unit gets PM on a set interval built around its mileage and duty cycle — no more forgotten services.
Priority service
Program customers jump the line for breakdowns and urgent repairs, so a down truck gets attention faster.
Predictable cost
Planned maintenance means budgetable spend and fewer surprise repair bills eating into your margins.
Documented compliance
Written records per unit support DOT compliance and give you a clear history for every truck in the fleet.
Why a Program
Trade downtime for uptime you can plan
One-off repairs are always more expensive than the maintenance that would have prevented them — in parts, in tows, and in missed work. A maintenance program flips the equation. By servicing units on a set schedule, small problems get caught while they are still cheap, and trucks spend more time earning and less time waiting.
We scope a program to your fleet: which units, what intervals, and how service fits around your routes. You get priority when something does go wrong, a written record for every unit, and a predictable monthly cost that makes budgeting and planning far easier.
Why operators call us
- Mobile service where the truck is sitting
- Testing before parts replacement
- Clear written findings and next steps
- Commercial diesel and fleet-focused support
- 24/7 Charleston-area availability
How We Set It Up
From first call to a running program
1. Review your fleet
We look at your units, makes, engines, mileage, and routes to understand how hard each truck works.
2. Build the intervals
Each unit gets a PM interval and scope sized to its duty cycle, so nothing is over- or under-serviced.
3. Agree on cost
You get a clear, predictable price for the program so maintenance spend is planned instead of reactive.
4. Service on-site
We come to your yard on schedule and perform PM where trucks park — no shuttling units to a shop.
5. Priority when down
If a program truck breaks down, you move to the front of the line for diagnosis and repair.
6. Records & review
Written records per unit and periodic reviews keep the program aligned as your fleet changes.
Ready to put your Charleston fleet on a program?
Call or text Lowcountry Diagnostics to scope scheduled intervals and predictable cost.
Fleet maintenance contract questions
How does a fleet maintenance contract work?
We agree on PM intervals for each unit, then service your trucks on that schedule at your yard. You get priority scheduling, written records per unit, and a predictable cost instead of surprise repair bills.
Is there a minimum fleet size for a program?
No strict minimum. Programs work for small fleets and owner-operators as well as larger operations. We scope intervals and pricing to the number of units and how hard they run.
Does a contract include priority service if a truck goes down?
Yes. Program customers move to the front of the line for breakdowns and urgent repairs, so a down truck gets attention faster than a one-off call.
Can we adjust the program as our fleet changes?
Yes. We add or remove units and adjust intervals as your fleet and routes change, so the program keeps fitting your operation. Call or text (843) 310-0995.
Request a Fleet Maintenance Program Quote
Tell us about your fleet and we will scope intervals, priority service, and a predictable cost. For urgent needs, calling or texting is fastest.
Truck down right now? Call or text (843) 310-0995.
Recent Repair Photos
A look at the repairs we make
Real field photos from Lowcountry Diagnostics — from engine diagnostics and electrical to hydraulic, HVAC, and heavy-duty truck service, handled on-site across the Charleston area.
Reviews