MASTER COMMERCIAL FLEET TECHNICIAN
Reports to: Truck Shop Manager
Build a Career. Not Just Repair Trucks.
Rental Guys is seeking an elite Master Heavy-Duty Fleet Diagnostic Technician to become the highest technical classification within our internal truck maintenance program. This position supports a private fleet of approximately 60–70 Class 8 highway tractors operating throughout Northern California and Northern Nevada. This is not a retail repair shop—our technicians maintain only Rental Guys equipment in a dedicated enclosed truck shop focused on fleet reliability, safety, and uptime.
WHY THIS POSITION IS DIFFERENT
· Dedicated indoor truck shop with no customer repair work.
· Consistent fleet of Kenworth, Peterbilt and Freightliner trucks.
· Detroit Diesel, Cummins and PACCAR engines.
· No flat-rate pressure—quality repairs come first.
· Modern diagnostic equipment and OEM software.
· Opportunity to become the company's highest technical resource.
PRIMARY RESPONSIBILITIES
· Lead advanced diagnostics on complex mechanical and electrical failures.
· Diagnose and repair Detroit Diesel DD13/DD15/DD16, Cummins X15/ISX, and PACCAR MX engines.
· Perform engine overhauls, driveline, clutch, transmission, differential and wheel-end repairs.
· Diagnose CAN Bus, J1939, multiplex wiring, ABS and aftertreatment systems.
· Interpret OEM service information, wiring diagrams and fault-code data.
· Mentor technicians and assist with difficult diagnostics.
· Maintain complete repair documentation and uphold DOT compliance.
MASTER TECHNICIAN QUALIFICATIONS
· Minimum Requirements:
· 10+ years progressively responsible heavy-duty diesel repair experience.
· Minimum 10 years specializing in Class 8 highway tractors and trailers class 7 and 8.
· Expert electrical diagnostics and root-cause analysis.
· Advanced proficiency with Cummins INSITE, Detroit DDDL, PACCAR DAVIE, Eaton ServiceRanger, Bendix ACom and Allison DOC.
· Ability to independently diagnose intermittent electrical and communication faults.
· Experience with DEF, DPF, SCR, EGR and emissions systems.
· Ability to mentor other technicians and lead complex repairs.
TOOL REQUIREMENTS
· A complete professional grade tool set capable of completing all aforementioned tasks of the master technician position
· Proof of tools will be required before hire
TECHNICAL COMPETENCIES
OEM Engines
· Detroit Diesel DD13/DD15/DD16
· Cummins X15/ISX/ISL
· PACCAR MX-11/MX-13
· Engine overhauls
· Fuel systems
· Turbochargers
Electrical
· CAN Bus
· SAE J1939
· Multiplex systems
· ECM programming
· Harness diagnostics
Powertrain
· Eaton manual/UltraShift/Endurant
· Allison transmissions
· Meritor & Dana axles
· PTO systems
· Wheel ends
Chassis
· Air brakes
· Bendix ABS
· Steering & suspension
· HVAC
· Cooling systems
· Hydraulics
PREFERRED CERTIFICATIONS
· ASE Master Medium/Heavy Truck Technician (T2–T8)
· Detroit Diesel Factory Training
· Cummins Factory Training
· PACCAR Factory Training
· Eaton, Allison, Meritor and Bendix Certifications
· DOT Inspector Certification
· EPA Section 609 HVAC Certification
· OSHA 10 or OSHA 30
· Class A CDL
· Welding and fabrication experience
· Basic tech training
· Truck modification and upfit
· Major trailer modification and repair
· Tire repair
COMPENSATION PHILOSOPHY
Compensation ranges from $38.00 to $50.00 per hour and is based on demonstrated diagnostic ability, OEM certifications, ASE credentials, technical proficiency, repair quality, leadership, and specialized training—not simply years of service. The upper end of the range is reserved for candidates who can independently diagnose and repair the most complex mechanical and electronic failures with minimal supervision.
TECHNICAL EVALUATION PROCESS
· Advanced technical interview
· Electrical troubleshooting discussion
· Wiring diagram interpretation
· Fault-code analysis
· Diagnostic scenario review
· Shop tour and team interview
BENEFITS
· Medical, Dental & Vision Insurance
· Life Insurance
· 401(k) with generous dollar-for-dollar company match
· 40% employee rental discount
· Seven paid holidays and paid time off
· Factory training and career advancement
· Stable employment with a growing company since 1959
CAREER PATH
Apprentice Technician → Technician I → Technician II → Senior Technician → MASTER CDL FLEET TECHNICIAN
Rental Guys is an Equal Opportunity Employer.
Pay: $38.00 - $50.00 per hour
Benefits:
- 401(k)
- 401(k) matching
- Dental insurance
- Employee assistance program
- Employee discount
- Health insurance
- Health savings account
- Life insurance
- On-the-job training
- Opportunities for advancement
- Paid time off
- Referral program
Experience:
- class 8 truck repair: 5 years (Required)
Work Location: In person
