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Diesel Mechanic Level 3 Jobs (NOW HIRING)

Burger Boat Company

Mechanic, Level 3

Manitowoc, WI · On-site

$23 - $29.50/hr

Mechanic employees are categorized into three different skill levels beginning with level 1, with the highest level being 3. The advancement of an employee to a higher skill/wage level shall be made ...

Blistex Inc

Production Mechanic (Level 3)

Oak Brook, IL · On-site

$29.95 - $33.54/hr

Production Mechanic Level 3 Location : Oak Brook, IL Schedule : 3rd Shift: Sunday - Thursday | 11 PM - 7:30 AM About the Role: The Production Mechanic (Level 3) is responsible for maintenance of all ...

Transdev

Diesel Mechanic

Minneapolis, MN · On-site

$50/hr

Transdev in Minneapolis is seeking an experienced A-Level (Level 3) Diesel Mechanic to bolster our team. This role demands expertise in diagnosing, repairing, and maintaining diesel engines across ...

Academy Bus

Diesel Bus Mechanic (Class C)

Perth Amboy, NJ · On-site

$23 - $28/hr

Diesel Mechanic - Class C / Level 3 * Repair, troubleshooting, and diagnosis of modern tour buses * Reconditioning, preventative and routine maintenance * General lubrication functions such as: Oil ...

Transdev

Diesel Mechanic

Minneapolis, MN · On-site

$50/hr

Transdev in Minneapolis is seeking an experienced A-Level (Level 3) Diesel Mechanic to bolster our team. This role demands expertise in diagnosing, repairing, and maintaining diesel engines across ...

NationaLease

Gas/Diesel Mechanic Level A

Landenberg, PA · On-site

$23.75 - $31.25/hr

OEM (Manufacturer) Training and Ongoing On-the-Job (OTJ) Training Opportunities What You'll Do Job Summary The Gas/Diesel Mechanic Level A is responsible for is responsible for performing advanced ...

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Diesel Mechanic Level 3 information

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How much do diesel mechanic level 3 jobs pay per hour?

As of Sep 12, 2026, the average hourly pay for diesel mechanic level 3 in the United States is $28.27, according to ZipRecruiter salary data. Most workers in this role earn between $24.04 and $31.73 per hour, depending on experience, location, and employer.

What is a diesel mechanic level 3?

A Diesel Mechanic Level 3 is an experienced technician who specializes in inspecting, maintaining, and repairing diesel engines, particularly in heavy-duty vehicles and equipment. At this level, mechanics are expected to handle complex diagnostics, perform advanced repairs, and may also supervise or mentor junior technicians. They have a strong understanding of electrical and mechanical systems, and often hold certifications demonstrating their expertise. Level 3 mechanics are trusted to work independently and ensure vehicles comply with safety and emission standards.

What skills and qualifications are needed to thrive as a diesel mechanic level 3?

To thrive as a Diesel Mechanic Level 3, you need advanced knowledge of diesel engine repair, diagnostics, and preventive maintenance, typically supported by a high school diploma or equivalent and several years of hands-on experience. Familiarity with diagnostic software, computerized maintenance management systems (CMMS), and certifications such as ASE Diesel Technician are often required. Strong problem-solving skills, attention to detail, and effective communication help mechanics excel in troubleshooting and collaborating with team members. These competencies ensure efficient repairs, vehicle reliability, and safety compliance in demanding fleet environments.

What are common challenges a diesel mechanic level 3 may face when diagnosing complex engine issues?

Diesel Mechanic Level 3 professionals often encounter challenges such as troubleshooting advanced diagnostic problems that may not be immediately revealed by standard testing equipment. These issues may require a deep understanding of electronic control systems and the latest diagnostic software. Additionally, Level 3 mechanics may need to collaborate closely with manufacturers or technical support teams for rare or persistent faults. Staying updated on new diesel technologies and managing time effectively on complex repairs are also key challenges.

What is the difference between Diesel Mechanic Level 3 vs Diesel Mechanic Level 2?

AspectDiesel Mechanic Level 3Diesel Mechanic Level 2
CertificationsRequires Level 3 certification, advanced skillsRequires Level 2 certification, basic to intermediate skills
Work EnvironmentPerforms complex repairs, diagnostics, and maintenanceHandles routine repairs and maintenance tasks
Employer UsageUsed in specialized or higher responsibility rolesCommon in entry to mid-level positions

Diesel Mechanic Level 3 professionals have advanced certifications and handle more complex repairs compared to Diesel Mechanic Level 2. Level 3 mechanics often work in specialized environments, performing diagnostics and repairs that require higher expertise, while Level 2 mechanics focus on routine maintenance and basic repairs. Both roles are essential in the industry, but Level 3 mechanics typically command higher responsibility and pay.

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For Diesel Mechanic Level 3 jobs, the most frequently searched job titles are:

Diesel Mechanic Level 3 jobs near you

Senior Semi Diesel Mechanic - Level 2+

Villa Park, IL • On-site

DSL Express
Trucking • 11 - 50 employees
Learn more about DSL Expressexternal

$35 - $50/hr

Full-time

PTO

Re-posted 28 days ago

Key responsibilities

  • Perform diagnostics and electrical repairs on semi-diesel engines.

  • Perform routine engine maintenance, repairs, and engine rebuilds.

  • Assist with DOT annual inspections and maintain maintenance logs.

Job description

Job Title: Senior Semi-Diesel Mechanic II+
Location: 1000 N Villa Ave, Villa Park, IL 60181
Company: Quality Parts and Repair (Division of DSL Express)
Job Type: Full-time (Part-time will be considered)
Salary: $35-$50 per hour (depending on experience and specialties)
Certifications Required: ASE Certification preferred but not required.
Job Description:
Quality Parts and Repair is seeking skilled and experienced semi-diesel mechanics to join our team. The ideal candidate will have expertise in diagnostics & electrical, engine work, and the replacement of engine components, clutch, transmission, and differentials as well as the ability to work with diagnostics and electrical as well as the ability to work on complete engine rebuilds. 
This is a senior-level position. Offers will depend heavily on expertise, certifications, and or experience. We will NOT exclude candidates with lesser skill sets as we need more than one type of candidate including those who are entry level and are looking to expand an entire team to include various levels of expertise but they can apply to a different posting with a different pay scale. We need experienced men and women to fill top spots.. Candidates may possess any or all of these skills and will be considered, with the pay scale based on their level of expertise, years of experience and other factors.
Responsibilities:
Level 2: Diagnostics & Electrical Specialist. Work duties may include any of the Level 1 objectives.
 
Pay Scale: $35-$40 per hour (depending on experience)
  • Perform diagnostics and electrical repairs on semi-diesel engines.
  • Troubleshoot and repair electrical systems.
  • Conduct routine maintenance checks.
  • Experience with industry-standard diagnostics software.
  • Assist in performing DOT annual inspections on vehicles.
  • May include some level 3 responsibility. Wil include some level 1 responsibility.
  • We definitely need someone who is experienced with truck tuning and diagnostics software suites.
  • However, we also need someone who is skilled at diagnosis and break-fixing the old fashioned way. 

Level 3: Engine Work and Rebuilds. Work duties may also include any of the Level 1 and 2 objectives.
 
Pay Scale: $40-$50 per hour (depending on experience)
  • Perform routine engine maintenance and repairs.
  • Diagnose and repair engine-related issues.
  • Ability to do full engine rebuilds and overhauls.
  • Ability to perform transmission and turbo rebuilds is a bonus.
  • Replace and refurbish parts.
  • Maintain maintenance logs.
  • Ensure services meet quality standards and safety procedures.
  • Perform DOT annual inspections on vehicles.
  • May or will include level 1 and 2 responsibilities from time to time. 
  • However, we need a top notch tech for high skilled technical challenges.
 
Requirements:
  • Proven experience as a semi-diesel mechanic.
  • Strong diagnostic and problem-solving skills.
  • Ability to work independently and as part of a team.
  • Excellent communication skills.
  • ASE Certification preferred.
  • 10+ years of experience is a serious bonus.
  • Military motor pool experience is desirable.

Benefits:
  • Competitive hourly pay.
  • Opportunities for professional development and advancement.
  • Paid time off.