ASE Medium/Heavy Truck Technician The ASE Medium/Heavy Truck Technician exam spans diesel engine diagnostics, transmission repair, brake systems including air-brake fundamentals, and electrical troubleshooting across Class 5?8 vehicles. You’ll need to identify fuel injection problems, interpret diagnostic codes, and handle hydraulic and pneumatic components that distinguish heavy-duty equipment from light-duty counterparts.
| Exam Name | ASE Medium/Heavy Truck Technician |
| Format | PDF & Practice Test Engine |
| Target Year | 2026 Updated |
| Features | 100% Verified Q&As |
