Diesel Truck Service Technician – Diagnostics & Repairs

Thompson Truck Group Trailer Shop; Knoxville (TN); On-site; USD 55,000 - 75,000; Full time

Benefits offered by this job

Competitive compensation

Performance-based earning

Comprehensive benefits

Paid training and manufacturer certs

Career advancement opportunities

Modern diagnostic tools

Supportive team environment

Stable, growing company

Job summary

Thompson Truck Group in Knoxville, TN is seeking a skilled Service Technician to diagnose and repair diesel and heavy‑duty vehicles. You will perform maintenance per manufacturer specs, troubleshoot multiple systems, and document findings for accurate repair orders.

Join a safety‑driven team with opportunities for training and advancement. Strong communication and collaboration with shop staff and customers are essential.

Qualifications

• Experience repairing diesel and heavy-duty trucks or commercial vehicles preferred.
• Strong diagnostic and troubleshooting skills.
• Ability to read and interpret repair manuals and wiring diagrams.
• Basic computer skills and electronic diagnostic tool experience.
• Valid driver's license; CDL preferred.

Responsibilities

• Perform repairs and maintenance per dealer and manufacturer specs.
• Diagnose and troubleshoot electrical, drivetrain, HVAC, braking, engine, suspension, and other systems.
• Document diagnostics, repairs, and recommendations on repair orders.
• Use diagnostic equipment to isolate faults and interpret test results.
• Communicate repair needs and delays to Service Advisor promptly.
• Obtain supervisor approval for additional repairs as required.
• Conduct road tests to verify repairs and assist with diagnostics.
• Track labor hours accurately to the repair order.

Skills

Diesel repair

Diagnostics

Wiring diagrams

Customer service

Teamwork

CDL preferred

Tools

Electronic diagnostic tools

Job description

Thompson Truck Group in Knoxville, TN is seeking a skilled Service Technician to diagnose and repair diesel and heavy‑duty vehicles. You will perform maintenance per manufacturer specs, troubleshoot multiple systems, and document findings for accurate repair orders.

Join a safety‑driven team with opportunities for training and advancement. Strong communication and collaboration with shop staff and customers are essential.