Warren Mcgregor

Diesel Mechanic, Heavy Equipment Technician, and Collision Repair Specialist with 20+ years of experience across automotive, heavy equipment, oilfield service, and fleet maintenance. Proven leader with experience supervising large teams and managing shop operations. Certified across multiple manufacturer programs with strong expertise in diagnostics, rebuilds, fabrication, and full equipment overhauls.

Collision & Mechanical Technician (Lead) at Big Sky Collision Center (2023-06 – 2024-07)

Led collision repair operations and team development

• Performed minor to major collision repairs and full restorations
• Specialized in structural and frame repair
• Completed engine, suspension, and transmission work
• Led frame repair operations and supported team development
• Performed aluminum welding and component installations

Lead Diesel Mechanic at Lithia Dodge / Chrysler / Jeep (2022-11 – 2023-04)

Lead diesel mechanic specializing in Cummins engines and drivetrain repairs

• Diagnosed and repaired Cummins diesel engines and drivetrains
• Performed warranty, fleet, and customer repairs
• Conducted alignments and advanced diagnostics
• Utilized certifications across Dodge, Chrysler, Jeep, and Mercedes platforms

Collision & Diesel Technician at Mitchell Crash Repair (2021-06 – 2022-11)

Collision and mechanical repair technician

• Completed collision and mechanical repairs on gas and diesel vehicles
• Performed frame repair, restorations, and paint preparation
• Conducted DOT inspections and post-accident assessments
• Maintained fleet and heavy-duty equipment

Diesel Mechanic at Big Sky Truck & Trailer (2018-10 – 2021-06)

Diesel mechanic for trucks, trailers, and heavy equipment

• Repaired diesel engines, trailers, and heavy equipment
• Conducted DOT inspections and roadside service calls
• Completed welding and fabrication work

Diesel Mechanic / Shop Supervisor at 12 Mile Automotive & Diesel (2011-09 – 2018-10)

Supervisor overseeing shop operations and mechanics

• Supervised daily shop operations and technicians
• Performed engine rebuilds, suspension, and transmission repairs
• Managed 24-hour towing operations

Heavy Equipment Technician (Union Skill Lead) at Tractor & Equipment (CAT Dealer) (2011-05 – 2014-11)

Union skill lead for heavy equipment rebuilds and assembly

• Led heavy equipment rebuilds and new equipment assembly
• Performed diagnostics, calibration, and system testing
• Completed CAT-certified training and quality inspections