Mechanic Heavy Truck

At Custom Truck One Source (CTOS) —  — we design, assemble, sell, rent, and service trucks, cranes, and heavy equipment. We proudly support some of the nation’s largest utilities, telecom, construction, forestry, oil, and rail companies.

Position Overview We are seeking an experienced Service Technician / Diesel Mechanic with at least 5+ years of experience working on medium- and heavy-duty trucks. This role requires strong diagnostic skills, hands-on mechanical expertise, and the ability to efficiently identify and repair a wide range of equipment issues.

Technicians will work on truck chassis, diesel engines, hydraulics, electrical systems, and truck-mounted utility equipment.

Key Responsibilities Diagnose, repair, and replace worn or damaged components on vocational and utility trucks

Perform preventative maintenance and detailed inspections

Troubleshoot mechanical, hydraulic, and electrical systems

Service truck-mounted equipment including boom trucks, bucket trucks, diggers, dump trucks, service trucks, forestry equipment, and aerial devices

Use diagnostic software and scan tools to identify faults and performance issues

Complete and maintain accurate service and repair records

Submit work orders for approval and ensure repair costs are tracked accurately

Follow all safety procedures and attend monthly safety meetings

Perform additional duties as assigned

Core Competencies Strong diesel engine diagnostics and repair (mechanical & electrical)
Preventative maintenance and visual inspections

Proficient with diagnostic software and scan tools

Ability to interpret fault codes, engine data, and system performance

Working knowledge of diesel engines, drivetrain, hydraulics, and electrical systems

Technical Experience Cummins INSITE diagnostic software

Detroit Diesel Diagnostic Link (DDDL)
OEM and aftermarket diagnostic tools

Electrical and hydraulic troubleshooting

Basic Qualifications High school diploma or equivalent

Experience with diesel, medium/heavy-duty trucks, or related equipment (construction, agriculture, military)
General mechanical aptitude (hydraulics, electrical, heavy equipment)
Basic computer skills and ability to document repair activity

Valid driver’s license

Must supply own tools

Preferred Qualifications Vocational/Technical training or Military Wheeled Mechanic experience3+ years of utility truck or heavy equipment repair experienceCDL Class A or B (preferred)
Work Schedule &

Physical Requirements Monday–Friday, day shift; overtime as needed (occasional Saturdays)
Ability to lift and move tools/equipment

Frequent bending, stooping, kneeling, and standing

High level of manual dexterity required

Compensation & Benefits Competitive pay based on experience

Health benefits
401(k) with company match

Paid time off (up to 25 days)
Tool discount program STEP Technician Training Program and career advancement opportunities

Custom Truck One Source is an Equal Opportunity Employer and provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.

Please note that we do not offer sponsorship for work authorization. Only candidates authorized to work in United States without the need for sponsorship will be considered for this position.

You should be proficient in:

Heavy Equipment Repair Motor Replacement/Repair/Maintenance Diesel Engine Systems Engine Repair Light Vehicle Diesel Engines Lift Truck Repair & Maintenance Ground Support Equipment (GSE) Maintenance Diesel & Heavy Equipment Systems Hydraulic Systems & Components Electrical Systems & Diagnostics (Heavy Equipment)
Equipment Diagnostics & Troubleshooting Power Take-Off (PTO) & Auxiliary Systems Crane & Lifting Equipment Systems Aerial & Utility Equipment Systems DOT & Equipment Inspection Compliance
#J-18808-Ljbffr