Diesel Service Technician Jobs
Diesel Service Technician jobs are open across trucking, construction, agriculture, mining, and public transit, from entry-level lube technicians to senior diagnostic specialists, with common specializations in heavy-duty engines, hydraulic systems, and emissions compliance. Find a role that fits below and apply directly.
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Showing 5 of 186+ Diesel Service Technician jobs
WHAT WE OFFER:
- Health / Dental / Vision Insurance
- Health Savings Account
- Life, Accident, and Disability Insurance
- 401(k) with company match
- Paid Time Off
- Paid Training
- Great Culture & Team Environment
- Long Term Career Opportunities
Ascendance is looking for an experienced, full-time Service Technician. This role is responsible for providing service to our customers while maintaining exceptional customer service. Duties can include cleaning, maintenance, visual inspection, and removal of parts and attachments. Installation with the help of proper manuals, report writing, disassembly, assembly, parts reuse evaluation, and reconditioning. The successful team member has at least one year of fleet, dealership, and/or technical school experience.
RESPONSIBILITIES:
- Provide technical service to vehicles and equipment
- Read job order, observe and listen to vehicle in operation to determine malfunction and plan work procedures
- Follow checklists to ensure that all critical parts are examined
- Examine protective guards, loose bolts, and specified safety devices on trucks, and adjust as needed
- Test-drive vehicles to ensure that they run smoothly
- Tag all warranty parts and returns to warranty clerk
- Attend training classes and keep abreast of factory technical bulletins
- Develop and maintain positive relationships with customers to increase overall customer satisfaction
- 1-year fleet or dealership experience
- High school diploma or equivalent is required
- ASE certification preferred
- CDL preferred
Ascendance Truck Centers is an equal opportunity employer. We value diversity and do not make any discrimination based upon race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Our team is made up of individuals from different backgrounds and perspectives, who share a genuine commitment to diversity, inclusivity, and respect for each other.
DISCLAIMER:
This is not necessarily an exhaustive list of responsibilities, skills, duties, requirements, efforts or working conditions associated with this position. While this list is intended to be an accurate reflection of the current position, the company reserves the right to revise the functions and duties of the job to require that additional or different tasks be performed, or further education required with circumstance changes (such as: growth, work load, changes in personnel, technological developments, etc.)
WHAT WE OFFER:
- Health / Dental / Vision Insurance
- Health Savings Account
- Life, Accident, and Disability Insurance
- 401(k) with company match
- Paid Time Off
- Paid Training
- Great Culture & Team Environment
- Long Term Career Opportunities
Ascendance is looking for an experienced, full-time Service Technician. This role is responsible for providing service to our customers while maintaining exceptional customer service. Duties can include cleaning, maintenance, visual inspection, and removal of parts and attachments. Installation with the help of proper manuals, report writing, disassembly, assembly, parts reuse evaluation, and reconditioning. The successful team member has at least one year of fleet, dealership, and/or technical school experience.
RESPONSIBILITIES:
- Provide technical service to vehicles and equipment
- Read job order, observe and listen to vehicle in operation to determine malfunction and plan work procedures
- Follow checklists to ensure that all critical parts are examined
- Examine protective guards, loose bolts, and specified safety devices on trucks, and adjust as needed
- Test-drive vehicles to ensure that they run smoothly
- Tag all warranty parts and returns to warranty clerk
- Attend training classes and keep abreast of factory technical bulletins
- Develop and maintain positive relationships with customers to increase overall customer satisfaction
- 1-year fleet or dealership experience
- High school diploma or equivalent is required
- ASE certification preferred
- CDL preferred
Ascendance Truck Centers is an equal opportunity employer. We value diversity and do not make any discrimination based upon race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. Our team is made up of individuals from different backgrounds and perspectives, who share a genuine commitment to diversity, inclusivity, and respect for each other.
DISCLAIMER:
This is not necessarily an exhaustive list of responsibilities, skills, duties, requirements, efforts or working conditions associated with this position. While this list is intended to be an accurate reflection of the current position, the company reserves the right to revise the functions and duties of the job to require that additional or different tasks be performed, or further education required with circumstance changes (such as: growth, work load, changes in personnel, technological developments, etc.)
Diesel Service Technician Jobs by Experience Level
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Find JobsDiesel Service Technician Job Market
Who's Hiring
- CENTRAL DIESEL SALES17C
- Kenworth Sales12
- Butler Machinery Company12
- Cummins8
- MHC Kenworth6
Top Industries Hiring
- Manufacturing12
- Automotive4
- Construction & Real Estate3
- Energy1
What Employers Look For
The qualifications that appear most often in diesel service technician jobs.
- ASE certification in medium/heavy truck or related diesel area preferred or required
- Hands-on experience diagnosing and repairing diesel engines, transmissions, and drivetrain components
- Proficiency with electronic diagnostic software such as Cummins INSITE or Detroit Diagnostic Link
- Valid commercial driver's license or ability to obtain one for road-testing repaired vehicles
- Vocational school diploma, trade school certificate, or associate degree in diesel technology
- Ownership of basic hand tools sufficient to perform diesel service and maintenance work
Tips for Your Diesel Service Technician Job Search
List your certifications front and center
Employers scan resumes fast, so put your ASE certifications, manufacturer-specific training, and any state emissions inspection licenses in a dedicated section near the top. Buried credentials cost you interviews, especially when applicant tracking systems screen for them.
Tailor your resume to the fleet type
A resume built around over-the-road semi trucks reads differently than one focused on construction equipment or municipal transit buses. Match your engine families, component experience, and diagnostic tools to the specific fleet each employer runs before you apply.
Apply early to roles that fit
Migrate Mate lists diesel service technician openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Highlight diagnostic software you know
Shops increasingly screen for technicians who already know Cummins INSITE, Detroit Diagnostic Link, or Allison DOC. Name the exact software on your resume rather than writing 'diagnostic tools,' since vague phrasing rarely survives an ATS keyword filter.
Ask about shop equipment during interviews
Questions about the lift capacity, scan tool inventory, and parts turnaround time signal that you work efficiently and know what slows a bay down. Interviewers at dealerships and independent shops both respond well to candidates who already think in uptime terms.
Negotiate your tool allowance separately
Diesel technicians carry significant personal tool investments, so clarify whether the employer provides a tool allowance, a tool loan program, or nothing before you accept an offer. The gap between shops on this point can meaningfully affect your total compensation.
Diesel Service Technician Jobs: Frequently Asked Questions
Which companies are hiring the most diesel service technicians?
The most active employers for diesel service technicians right now are CENTRAL DIESEL SALES, Kenworth Sales, and Butler Machinery Company, and the most openings are in North Dakota, Colorado, and Virginia, based on current listings on Migrate Mate as of August 2026. Demand is particularly strong at dealerships, national trucking fleets, and heavy equipment rental companies.
How many diesel service technician jobs are remote?
About 3% of diesel service technician openings are fully remote or hybrid as of August 2026, since most of the work requires physical access to vehicles and equipment. The sub-areas most likely to include remote components are warranty administration, parts advising, and regional technical support roles that combine field visits with documentation work from home.
How do you become a diesel service technician?
Start by completing a diesel technology program at a trade school or community college, which typically covers engine systems, electrical diagnostics, and hydraulics. From there, pursue an entry-level technician or lube tech position to build hands-on hours. As you accumulate experience, sit for ASE certifications in the medium and heavy truck categories, and pursue any manufacturer-specific training offered by the brands your employer services.
Can you get hired as a diesel service technician with little experience?
Yes, many shops hire entry-level candidates into lube technician or technician helper roles specifically to develop them over time. Completing a formal diesel program signals mechanical fundamentals even without shop hours. Emphasizing any agricultural, military, or fleet maintenance background on your resume helps, and smaller independent shops are often more willing to train candidates who show strong mechanical aptitude and a reliable work history.
What does the diesel service technician interview process look like?
Most diesel technician interviews start with a phone or in-person conversation about your experience with specific engine families and diagnostic tools. A shop tour and a practical skills assessment or hands-on demonstration are common at dealerships and larger fleets. Interviewers typically ask how you approach a no-start diagnosis or a recurring electrical fault, so be ready to walk through your diagnostic process step by step.
Where can I find and apply to diesel service technician jobs?
You can find and apply to diesel service technician jobs on Migrate Mate, which lists current openings from employers across the United States. Search the listings for roles that match your experience level, certifications, and preferred fleet type, then apply directly to each one that fits.
See All 186+ Diesel Service Technician Jobs
Find roles that match your experience and apply in just a few clicks.
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