Diesel Technician

Western Truck Exchange is looking for an experienced Diesel Technician to join our growing team. We’re building a shop where technicians are supported, respected, and rewarded for skill—especially those who want to grow into (or deepen) a specialty. In this role, you’ll diagnose, repair, and maintain medium-duty trucks with a focus on safety, quality, and clear communication.

Compensation & perks

• Opportunity to earn $100,000+ annually with a competitive wage system


• Profit Sharing Plan


• Rapid Improvement Plan incentives (quarterly opportunities to earn extra cash)


• Paid training


• Employee referral bonus


• CDL reimbursement support


• Uniform allowance


• Employee discount and paid time off

Shop environment

• Professional standards and real advancement paths


• We are certified for CAT and Cummins repairs, and qualified for Allison maintenance and rebuild services (experience with these is strongly preferred).

Core responsibilities

• Perform preventative maintenance inspections, oil changes, chassis lubrication, and identify worn/damaged parts


• Repair/diagnose major systems with minimal supervision (based on skill level), including clutches, electrical systems, hydraulic/air brake systems, HVAC, instruments/gauges, and PM services


• Diagnose/repair major components including gasoline and diesel engines, drivetrain/powertrain (differentials, transmissions, driveshafts, PTOs, wheel ends), engine bolt-on components (turbochargers, fan clutches, injectors/fuel system components), and electronics (ECM/ECU/sensors)


• Road test vehicles as needed to confirm concerns and verify repair quality

Required Qualifications

• 5+ years of practical experience in mechanical inspections and repairs


• High school diploma or equivalent


• Proficiency with shop tools/hand tools; ability to supply a basic set of hand tools (as applicable by role/level)


• Valid driver’s license; must have or be able to obtain a CDL


• Comfortable working in non–climate controlled conditions


• Reliable attendance and punctuality


• Basic computer skills for maintenance systems and documentation


• Willingness to travel as needed (customer yards and training sites)

Strongly Preferred

• Experience with diagnostic tools


• Experience with CAT and Cummins engine diagnostics/repairs (certified repair environment a plus)


• Experience with Allison transmission maintenance and rebuild-related services


• Experience working on International and Mitsubishi Fuso medium-duty platforms


• Vocational/technical certifications

What To Expect

• Complete and submit an application


• Interviews: typically at least two conversations to confirm fit both ways


• Background check (employment/education/criminal history) and drug screening


• Selected candidates may receive a brief follow-up questionnaire to indicate their level of proficiency across key technical skills and systems

Who We Are

At Western Truck Exchange, we believe our people are the driving force that keeps our customers — and the trucking industry — moving forward. That’s why we foster a culture of respect, appreciation, and opportunity, recognizing every employee’s contribution to our shared success.

Western Truck Exchange is the leading retailer of used and new medium-duty commercial trucks in Los Angeles. Established in 1922, we’re one of California’s oldest licensed dealerships—and we’re proud to be an International dealership with a service team focused on doing the job right, safely, and professionally.

We’re always looking for motivated, hardworking professionals who are passionate about helping fleets stay on the road and businesses keep moving. Whether in sales, service, or parts, teamwork drives everything we do — and it’s what allows us to deliver for our customers, every time. If you’re ready to bring your skills to an industry where reliability matters most, we’d love to hear from you.

We are an equal opportunity employer and prohibit discrimination/harassment in accordance with applicable laws.