About Lowcountry Diagnostics
Built from real field experience, not a sales script.
Lowcountry Diagnostics was founded by Joseph Cufaude to bring hands-on diesel repair, diagnostics, and fleet maintenance experience directly to trucks, equipment, jobsites, yards, and roadside locations across the Charleston area.
Joseph’s background comes from years of working around commercial trucks, fleet maintenance, equipment repair, diagnostics, and shop leadership — where downtime, communication, and doing the job right actually matter.
We started Lowcountry Diagnostics because too many truck owners and fleet managers are left guessing. A warning light comes on, a truck derates, an electrical issue shows up, or a unit goes down, and the answer too often becomes throwing parts at the problem. That is not how we work.
Our approach is diagnostic-first. We review the reported issue, verify the failure, test before replacing parts, and explain what we find in clear terms. The goal is not just to get a truck moving again — it is to help customers understand what happened, what needs to be repaired, and what should be watched or planned before it becomes another breakdown.
Lowcountry Diagnostics serves light-duty, medium-duty, and heavy-duty commercial vehicles, with a focus on mobile diesel diagnostics, fleet maintenance, aftertreatment issues, electrical problems, no-starts, air brake concerns, liftgate hydraulics, HVAC repairs, mobile welding, and practical field repairs.
When a repair can be handled on-site, we handle it. When a job needs shop-level equipment, major teardown, or outside support, we communicate that clearly instead of wasting your time.
For fleet customers, we believe maintenance should be more than an oil change. It should help reduce repeat failures, document concerns, catch problems early, and keep trucks available for work. Whether you run one truck or a small fleet, our goal is to provide accurate diagnostics, clear communication, and repair direction you can act on.
Lowcountry Diagnostics is based in Goose Creek, South Carolina, and serves commercial trucks, contractors, service companies, owner-operators, and local fleets throughout Charleston, North Charleston, Mount Pleasant, Summerville, Hanahan, Ladson, Moncks Corner, and the surrounding Lowcountry area.