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Certifications that raise your rate
Master Medium and Heavy Truck technician
Passing the full ASE (National Institute for Automotive Service Excellence) truck series. The clearest pay signal in the trade.
Diesel engine performance and emissions
Particulate filters and exhaust fluid systems are where most modern faults live, and where the shortage is worst.
CDL (commercial driver's license), Class A or B
Road testing, ferrying trucks, and a fallback career if your body gives out.
Welding
Frame and exhaust repairs stay in the shop instead of going out to a specialist.
Manufacturer training
Cummins, Detroit Diesel, Allison and Volvo courses. Dealers pay more for badged technicians.