Master Diesel Shop Foreman

Western Truck Exchange is looking for a Master Diesel Foreman to lead in rebuilding and growing our service department. We need a hands-on diagnostic leader who can bring structure to the shop floor: diagnose trucks correctly, map the repair path, dispatch work to the right technician, and drive quality and accountability—so our Service Manager can focus on customer relationships and bringing in more work.

This role is the communication hub between technicians, advisors, and parts, ensuring repairs are completed properly, efficiently, and safely.

• Competitive pay: $100,000–$120,000/year (DOE).

• Profit sharing plan.

• Quarterly incentive opportunities.

• Paid training.

• Employee referral bonus.

• CDL reimbursement support (as applicable for renewals/endorsements).

• A real leadership seat: you’ll help rebuild systems and standards, and you’ll see your impact immediately.

• Perform advanced diesel engine diagnostics and electrical troubleshooting

• Triage incoming commercial truck repair work

• Assign jobs based on technician skill level

• Provide coaching and hands‑on support to technicians

• Improve first‑time‑fix accuracy

• Own workflow and daily communication between technicians, service advisors, and parts

• Run daily production meetings (10–25 minutes)

• Monitor open repair orders, promised times, and parts availability

• Walk the floor regularly to remove bottlenecks

• Adjust priorities in real time

• Final review and sign‑off on repair orders

• Confirm documentation accuracy and proper road testing

• Enforce a no‑comeback mindset

• Ensure technician notes clearly document root cause and repair

• Coordinate with Parts on warranty and core returns

• Maintain a safe and organized shop environment

• Ensure diagnostic tools and shop equipment accountability

• Support technician recruiting, interviewing, and onboarding

• Coach and develop Diesel Technician

• Participate in performance management and staffing decisions

• Build a high‑performing commercial truck repair team

• Utilize modern diagnostic software and AI‑assisted diagnostic tools

• Improve troubleshooting speed and root‑cause accuracy

• Apply strong mechanical judgment and safe repair practices

• Valid Class A CDL (or willing to obtain if not currently held).

• 5+ years of medium/heavy‑duty truck repair experience.

• Strong technical knowledge and diagnostic problem‑solving ability.

• Strong communication and organization skills; ability to lead and support technicians.

• Ability to road test vehicles as needed to diagnose and verify repairs.

• Ability to speak Spanish fluently.

• Familiarity with OEM and warranty processes and dealership operations.

• Comfort driving workflow discipline: clear documentation, daily planning, and real‑time floor management.

• Familiarity with CDK.

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 are fully certified for CAT and Cummins repairs
, and qualified to provide Allison maintenance and rebuild services.

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.