Diesel Truck Technician: Precision Diagnostics & Repairs

Nexus HR Services; Sacramento (CA); On-site; USD 44,083 - 46,838; Full time

Job summary

Nexus HR Services in Sacramento, CA is seeking an experienced Diesel Truck Mechanic to diagnose, repair, and maintain heavy-duty diesel trucks and trailers. You will work in a fast-paced shop, using modern diagnostic tools, performing preventive maintenance, and ensuring DOT compliance and high safety standards.

Ideal candidates have at least 3 years in diesel tech, a valid CA driver's license (CDL a plus), and strong attention to quality workmanship and customer service for a heavy fleet

Qualifications

• Minimum 3 years of experience as a Diesel Mechanic, Heavy Equipment Mechanic, or Heavy‑Duty Truck Technician.
• High school diploma or GED required; vocational or technical training in Diesel Technology preferred.
• Valid California driver's license required; CDL is a plus.
• ASE Medium/Heavy Truck Certification is preferred but not required.

Responsibilities

• Diagnose, troubleshoot, and repair diesel engines, transmissions, hydraulics, suspension systems, steering components, and air brake systems.
• Perform preventive maintenance, including oil changes, brake repairs, inspections, and fluid services.
• Conduct truck and trailer wheel alignments to manufacturer specifications.
• Utilize diagnostic equipment, schematics, and technical manuals to identify and resolve mechanical and electrical issues.
• Repair and maintain tractor‑trailers, heavy‑duty trucks, and other commercial equipment.
• Operate hand tools, power tools, welding equipment, and soldering tools for repairs and fabrication work.
• Inspect completed repairs to ensure safety, quality, and compliance with DOT and industry standards.
• Maintain accurate service records, repair orders, and maintenance documentation.
• Collaborate with service Advisors and team members to complete repairs efficiently.
• Maintain a clean, organized, and safe work environment.

Skills

Preventive maintenance

DOT inspections

Heavy-duty truck repair

Vehicle safety regulations

Wheel alignment

Education

High school diploma or GED

Diesel technology training

Job description

Nexus HR Services in Sacramento, CA is seeking an experienced Diesel Truck Mechanic to diagnose, repair, and maintain heavy-duty diesel trucks and trailers. You will work in a fast-paced shop, using modern diagnostic tools, performing preventive maintenance, and ensuring DOT compliance and high safety standards.

Ideal candidates have at least 3 years in diesel tech, a valid CA driver's license (CDL a plus), and strong attention to quality workmanship and customer service for a heavy fleet