About us

Cornwell’s Truck Repair is a locally owned, full-service semi / diesel truck and trailer repair company based in Tucson, Az .We operate 24/7 and serve drivers, owner-operators, and fleets across
Southern Arizona and down I-10 East. with shop and mobile service. ASE-certified techs and a fleet of mobile service trucks, supporting light-, medium-, and heavy-duty diesel vehicles.
We also cover a wider radius with reported service points in Tucson, San Simon, and Lordsburg, and a mobile coverage area of up to roughly 150 miles. Phone: (520) 790-7990.

Complete overhauls and routine maintenance for trucks, semi-trucks, and trailers
Engine diagnostics and rebuilding
Trailer repairs: brakes, suspension, axles, lighting/electrical, doors and hardware
Refrigeration (reefer) unit troubleshooting and repair
Mobile roadside/on-site repairs 24/7; towing coordination available
Preventative maintenance programs tailored to fleet intervals and OEM specs
Electrical and aftertreatment diagnostics to resolve codes, derates, and no-starts
Drivetrain, steering, suspension, and full brake system service
DOT inspection corrections and compliance repairs
24/7 dispatch for shop or roadside response
ASE-certified techs, diagnostic tooling, and stocked service trucks
Fast access from major routes and near truck stop amenities

Contact us for truck repairs you can count on