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What Does a Diesel Mechanic Do?

Diesel is considered the ideal fuel to power the nation’s buses and tractor-trailers, and keeping those vehicles on the road requires a steady flow of diesel mechanics. Sometimes referred to as diesel service technicians, diesel mechanics are responsible for maintaining and repairing vehicles and machinery that run on diesel fuel. A diesel mechanic may work in a variety of industries on many different types of heavy equipment, including trucks, buses, bulldozers, cranes and tractors. These mechanics possess in-depth knowledge of vehicle electrical systems, diesel engines and parts.

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Median Salary $
47,000
Jobs Available
10,300+
Diesel mechanic inspects a truck engine
A diesel mechanic is a good problem-solver, performing basic maintenance on one vehicle and using a computer to adjust engine functions on another. (Credit: Kot500/Shutterstock)
Duties + Responsibilities
  • Diagnose engine fault codes, wiring diagnostics, air brake system, exhaust filtration and regeneration systems
  • Perform thorough inspections of vehicle systems including steering and brakes
  • Carry out in-depth repairs 
  • Replace malfunctioning parts
  • Perform basic maintenance 
  • Test-drive vehicles to ensure everything is working properly
EDUCATION + TRAINING

Most employers require a high school diploma or equivalent and provide on-the-job training. Some look for applicants who have completed training programs in diesel engine repair or service technology. These programs may lead to a certificate or an associate degree, depending on the program. New mechanics can expect about three to four years of on-the-job training to reach journey-level status. Training through a focused, brand-specific diesel engine repair program — which may be shorter — is another path to employment opportunities. Continuing education is encouraged, and many manufacturers offer special training classes that cover the latest innovations.

YOU MAY BE A GOOD FIT FOR THIS POSITION IF YOU
  • Have strong analytical skills 
  • Have the ability to think on your feet  
  • Possess mechanical and technical know-how
  • Have good attention to detail
  • Have good hand-eye coordination
  • Have strong communication skills
  • Are comfortable with changing technology

Diesel Mechanic training in your area

Coordinates

Diesel and Heavy Equipment Mechanics, A.A.S.

Lurleen B. Wallace Community College
Andalusia (0.0 Miles)
Triton College

Commercial Vehicle Technology Brake and Suspension, Certificate

Triton College
River Grove (0.0 Miles)

Diesel Technology - Heavy Equipment, A.A.S.

Metropolitan Community College (NE)
Omaha (0.0 Miles)

Diesel & Heavy Equipment Technology, A.A.S.

South Seattle College
Seattle (0.0 Miles)

Diesel & Heavy Equipment Technology: Emphasis in Diesel Engines Certificate

Davidson County Community College
Thomasville (0.0 Miles)

Diesel Engine Level 1 Certificate

Galveston College
Galveston (0.0 Miles)

Diesel Equipment Mechanic Technical Diploma

Northcentral Technical College
Wausau (0.0 Miles)

Engine Repair, Caterpillar Certificate of Achievement

San Diego Miramar College
San Diego (0.0 Miles)

Diesel Technology, A.A.S.

St. Louis Community College
Bridgeton (0.0 Miles)

Heavy Diesel Truck, A.A.S.

San Jacinto College District
Pasadena (0.0 Miles)

Diesel Equipment Technology, A.S.

Merced College
Merced (0.0 Miles)

Diesel Technology Certificate

Lane Community College
Eugene (0.0 Miles)

Find Diesel Mechanic Jobs in Your Area

Coordinates

Diesel Mechanic Apprentice

Love's Travel Stops & Country Stores, Inc.
Bushnell ( 0.0 ) Miles
Posted 1 month 3 weeks ago

Diesel Mechanic Apprentice

Love's Travel Stops & Country Stores, Inc.
Oglesby ( 0.0 ) Miles
Posted 1 month 3 weeks ago

Diesel Mechanic Apprentice

Love's Travel Stops & Country Stores, Inc.
Bennett ( 0.0 ) Miles
Posted 1 month 3 weeks ago

Diesel Mechanic Apprentice

Love's Travel Stops & Country Stores, Inc.
Columbia ( 0.0 ) Miles
Posted 1 month 3 weeks ago

Diesel Mechanic Apprentice

Love's Travel Stops & Country Stores, Inc.
Galesburg ( 0.0 ) Miles
Posted 1 month 3 weeks ago

Diesel Mechanic Apprentice

Love's Travel Stops & Country Stores, Inc.
Columbia ( 0.0 ) Miles
Posted 1 month 3 weeks ago

Diesel Mechanic Apprentice

Love's Travel Stops & Country Stores, Inc.
Richmond ( 0.0 ) Miles
Posted 1 month 3 weeks ago

Removal Technician

Service Corporation International
Paramount ( 0.0 ) Miles
Posted 1 month 3 weeks ago