Medium \ Heavy Duty Diesel Technician

Acts Fleet Maintenance; Knoxville (TN); On-site; USD 48,000 - 70,000; Full time

Benefits offered by this job

Health Insurance

Dental Insurance

Vision Insurance

401(k) Retirement Plan

Paid Time Off

OEM & Technical Training

Technician Growth Program

Job summary

ACTS Fleet Maintenance in Knoxville, TN is seeking a Diesel/Fleet Technician to keep commercial fleets safe, reliable, and operating at peak performance. You will perform preventive maintenance, diagnose, and repair medium- and heavy-duty diesel trucks and equipment, using advanced diagnostic tools, while documenting work and maintaining a clean, safe shop environment.

The role offers competitive pay with performance incentives, extensive OEM training, and opportunities for career advancement

Qualifications

• Experience working on diesel engines, fleet vehicles, heavy equipment, trailers, or commercial trucks.
• Medium- or heavy-duty diesel repair experience preferred.
• Strong mechanical aptitude and diagnostic skills.
• Experience using electronic diagnostic software and equipment.
• Ability to perform preventive maintenance and major mechanical repairs.
• Valid driver's license; CDL is a plus but not required.
• ASE certifications are a plus (or willingness to obtain).

Responsibilities

• Perform preventive maintenance inspections and scheduled services.
• Diagnose and repair medium- and heavy-duty diesel trucks, trailers, and commercial equipment.
• Troubleshoot engine, electrical, air, hydraulic, suspension, and brake systems using advanced diagnostic equipment.
• Complete repairs efficiently while maintaining high-quality workmanship.
• Identify potential issues before they become costly breakdowns.
• Accurately document repairs and inspections.
• Maintain a clean, safe, and organized work environment.
• Work closely with a team committed to safety, quality, and customer satisfaction.

Skills

Diesel engine repair

Fleet vehicle maintenance

Diagnostic skills

Preventive maintenance

Teamwork

Tools

Electronic diagnostic software

Diagnostic equipment

Job description

Diesel / Fleet Technician

Knoxville, TN | Full-Time | Competitive Pay + Performance Incentives

Fix Trucks. Build a Career.

At ACTS Fleet Maintenance, we believe great technicians deserve more than just another job—they deserve a career where they can continue learning, growing, and earning more.

For more than 35 years, ACTS Fleet Maintenance has helped commercial fleets throughout East Tennessee stay safe, productive, and on the road through industry-leading preventive maintenance and repair services. As we continue to grow, we're looking for skilled, motivated technicians who take pride in quality workmanship and want to build a long-term future with a company that invests in its people.

Whether you're an experienced diesel technician or a mechanically talented professional ready to take the next step, ACTS offers the training, tools, and opportunities to help you succeed.

Why ACTS?

At ACTS Fleet Maintenance, we don't just repair trucks—we build careers.

When you join our Knoxville team, you'll enjoy:

• One of the highest earning opportunities in the industry
• Performance-based compensation that rewards productivity and quality
• Modern, well-equipped shops with the latest diagnostic equipment and technology
• A structured Technician Growth Program with clear advancement opportunities
• Ongoing OEM and technical training to expand your skills
• Opportunities to grow into advanced technician and leadership roles
• A supportive team that values craftsmanship, accountability, and continuous improvement
• A company culture built on teamwork, respect, and lasting friendships
• Company-sponsored team events throughout the year
• A stable, family-owned company with more than 35 years of continued growth

What You'll Do

As a Diesel/Fleet Technician, you'll play a critical role in keeping our customers' commercial fleets safe, reliable, and operating at their best.

Responsibilities include:

• Perform preventive maintenance inspections and scheduled services
• Diagnose and repair medium- and heavy-duty diesel trucks, trailers, and commercial equipment
• Troubleshoot engine, electrical, air, hydraulic, suspension, and brake systems using advanced diagnostic equipment
• Complete repairs efficiently while maintaining high-quality workmanship
• Identify potential issues before they become costly breakdowns
• Accurately document repairs and inspections
• Maintain a clean, safe, and organized work environment
• Work closely with a team committed to safety, quality, and customer satisfaction

Who We're Looking For

We're seeking technicians who are:

• Passionate about solving mechanical problems
• Driven to continue learning and growing
• Dependable, accountable, and safety-minded
• Self-motivated with a strong work ethic
• Team players who take pride in quality craftsmanship
• Looking for a long-term career—not just another shop

Qualifications

Preferred qualifications include:

• Experience working on diesel engines, fleet vehicles, heavy equipment, trailers, or commercial trucks
• Medium- or heavy-duty diesel repair experience preferred
• Strong mechanical aptitude and diagnostic skills
• Experience using electronic diagnostic software and equipment
• Ability to perform preventive maintenance and major mechanical repairs
• Valid driver's license
• CDL is a plus but not required
• ASE certifications are a plus (or willingness to obtain)

Compensation & Benefits

Competitive Pay + Performance Incentives

We offer a comprehensive benefits package, including:

• Health Insurance (50% Company-Paid Single Coverage)
• Dental Insurance
• Vision Insurance
• 401(k) Retirement Plan
• Paid Time Off
• Ongoing OEM & Technical Training
• Technician Growth Program
• Career Advancement Opportunities

Build More Than Trucks. Build Your Future.

At ACTS Fleet Maintenance, our technicians are the foundation of our success. That's why we invest in your training, reward your performance, and provide opportunities to grow your career while working alongside a team that values quality, integrity, and continuous improvement.