At HM Diesel Repair, we offer a full spectrum of diesel truck repair and maintenance services that keep your fleet operating at peak efficiency. Our team of seasoned technicians employs the latest diagnostic tools and industry best practices to deliver reliable, cost‑effective solutions.

Preventive Maintenance: Regular oil changes, brake inspections, wheel seal repairs, and DOT compliance checks prevent major failures and extend component life. We also perform comprehensive air‑filter cleaning, battery testing, and electrical system diagnostics to keep your engine running smoothly.

Computer Diagnostics: With specialized equipment, we read and clear engine control unit (ECU) fault codes, analyze sensor data, and calibrate systems for optimal performance. Our diagnostics cover a wide range of models including Freightliner, International, Peterbilt, Kenworth, Paccar, and Cummins, ensuring accurate problem identification and swift resolution.

Electrical Repair: From faulty wiring to malfunctioning sensors, we troubleshoot and repair all electrical issues that can compromise safety and reliability. Our technicians replace blown fuses, re‑wire circuits, and test alternators and starters for consistent power delivery.

DEF System Repair: We service diesel exhaust fluid (DEF) systems, including pumps, tanks, and meters, to maintain emissions compliance and protect catalytic converters. Our technicians replace worn components and recalibrate sensors to guarantee proper DEF flow and accuracy.

Transmission & Clutch Service: We rebuild or replace transmissions, clutches, flywheels, and differentials, using precision machining and high‑grade components. Our repair work restores torque capacity, reduces wear, and improves shift quality for heavy‑haul applications.

Engine Overhaul & Swaps: When an engine requires a complete rebuild or a swap, we handle the entire process—from disassembly and component inspection to reassembly and tuning. Our expertise ensures that each engine meets manufacturer specifications and delivers reliable performance.

Fleet Maintenance: For operators managing multiple vehicles, we provide coordinated scheduling, real‑time tracking of service histories, and cost‑management strategies. Our goal is to minimize downtime, maximize uptime, and protect your bottom line.