Certifications for Bus and Truck Mechanics and Diesel Engine Specialists
52 certifications are listed for Bus and Truck Mechanics and Diesel Engine Specialists (O*NET 49-3031.00) in the U.S. Department of Labor's CareerOneStop Certification Finder. 51 are tied directly to this occupation; the other 1 is related.
The order is CareerOneStop's, not ours: in demand first, then NCCA- and ANAB-accredited, then the rest. Downloaded July 2026. Records marked confidential or withdrawn at source are not published here. Listing is not endorsement, and this page is not advice about which credential to pursue.
- Ambulance Technician Level IMilitary occupational specialty
- Ambulance Technician Level IIMilitary occupational specialty
- Ambulance Technician Level IIIMilitary occupational specialty
- ARFF Technician Level IMilitary occupational specialty
- ARFF Technician Level IIMilitary occupational specialty
- ARFF Technician Level IIIMilitary occupational specialty
- ASE Military Tactical Wheeled Vehicle Certification - MIL1 Military Fundamentals(MIL1)Military occupational specialty
- Auto Maintenance and Light Repair Certification - G1Military occupational specialty
- Automobile & Light Truck Certification - A4 Suspension & SteeringMilitary occupational specialty
- Automobile & Light Truck Certification - A6 Electrical/Electronic SystemsMilitary occupational specialty
- Automobile & Light Truck Certification - A8 Engine PerformanceMilitary occupational specialty
- Collision Repair & Refinish Certification - B2 Painting & RefinishingMilitary occupational specialty
- Collision Repair & Refinish Certification - B3 Non-Structural Analysis & Damage RepairMilitary occupational specialty
- Fire Apparatus Technician Level IMilitary occupational specialty
- Fire Apparatus Technician Level IIMilitary occupational specialty
- Fire Apparatus Technician Level IIIMilitary occupational specialty
- Law Enforcement Vehicle Installation TechnicianMilitary occupational specialty
- Light Duty Hybrid/Electric Vehicle Specialist Certification - L3(L3)Military occupational specialty
- Management Level I Supervisor(M-1)Military occupational specialty
- Management Level II Supervisor(M-2)Military occupational specialty
- Medium-Heavy Truck Certification - T1 Gasoline Engines(T1)Military occupational specialty
- Medium-Heavy Truck Certification - T2 Diesel Engines(T2)Military occupational specialty
- Medium-Heavy Truck Certification - T3 Drive Train(T3)Military occupational specialty
- Medium-Heavy Truck Certification - T4 Brakes(T4)Military occupational specialty
- Medium-Heavy Truck Certification - T5 Suspension & Steering(T5)Military occupational specialty
- Medium-Heavy Truck Certification - T6 Electrical/Electronic Systems(T6)Military occupational specialty
- Medium-Heavy Truck Certification - T7 Heating, Ventilation & Air Conditioning (HVAC)(T7)Military occupational specialty
- Medium-Heavy Truck Certification - T8 Preventive Maintenance Inspection(T8)Military occupational specialty
- Parts Specialist Certification - P1 Medium-Heavy Truck Parts Specialist(P1)Military occupational specialty
- School Bus Certification - S1 Body Systems & Special Equipment(S1)Military occupational specialty
- School Bus Certification - S2 Diesel Engines(S2)Military occupational specialty
- School Bus Certification - S3 Drive Train(S3)Military occupational specialty
- School Bus Certification - S4 Brakes(S4)Military occupational specialty
- School Bus Certification - S5 Suspension and Steering(S5)Military occupational specialty
- School Bus Certification - S6 Electrical/Electronic Systems(S6)Military occupational specialty
- School Bus Certification - S7 Air Conditioning Systems & Controls(S7)Military occupational specialty
- Transit Bus Certification - H4 BrakesMilitary occupational specialty
- Transit Bus Certification - H6 Electrical/Electronic Systems(H6)Military occupational specialty
- Automobile & Light Truck Certification - A7 Heating & Air Conditioning(A7)Military occupational specialty
- Advanced Driver Assistance Systems (ADAS) Specialist Certification - L4(L4)
- Automobile & Light Truck Certification - A9 Light Vehicle Diesel Engines
- Diesel Scanner Diagnostics Certification
- Electronic Diesel Engine Diagnosis Specialist Certification - L2(L2)
- Heavy-Duty/Diesel for Career-Technical Education
- Parts Specialist Certification - P2 Automobile Parts Specialist
- Parts Specialist Certification - P4
- School Bus Certification Tests - S5 Suspension & Steering(S5)
- Transit Bus Certification - H1 Compressed Natural Gas (CNG) Engines(H1)
- Transit Bus Certification - H2 Diesel Engines
- Transit Bus Certification - H3 Drive Train
- Transit Bus Certification - H5 Suspension & Steering(H5)
- Transit Bus Certification - H7 Heating Ventilation & Air Conditioning (HVAC)(H7)
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Certification data from CareerOneStop, sponsored by the U.S. Department of Labor, Employment and Training Administration (DOLETA) and the Minnesota Department of Employment & Economic Development (DEED).
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