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DIESEL TECHNICIANS

Tri-State Truck Center
Jackson, MS Full Time
POSTED ON 4/1/2025
AVAILABLE BEFORE 6/1/2025

We are seeking DYNAMIC Diesel Technicians to add to our family in Jackson, MS!

In this role, your primary responsibilities will be to:

Working on a variety of different types of equipment and supporting our customers as they drive their Mack or International medium and heavy duty trucks on the road.

maintains advanced knowledge of and strong skill proficiency in the following vehicle components and systems, with the ability to perform complex repair and maintenance functions:

  • At least 3 years of experience as a technician working on heavy duty trucks.
  • ASE Heavy Truck Certifications (T1-T8) are a plus but not required.
  • Class B or higher Commercial Driver’s License is a plus but not required.
  • Valid Driver’s License (required).
  • Must have own tools to perform the tasks that are given to you.
  • Completes applicable company training programs.
  • Completes applicable manufacture training programs for Mack and International and other items.
  • Ability to perform inspections and repairs without supervision in some (not all required) of the following heavy trucks or automotive systems.
  • Performs other job-related duties as assigned or apparent.
  • Basic understanding of work order labor time standards.
  • Prior experience with, or knowledge of, maintenance work to be performed on Classes 1-5 light/medium duty and heavy-duty Class 6 and 8 trucks.
  • Must be able to rotate a Saturday shift.
  • Hydraulic experience is a plus.
  • Welding experience is a plus.
  • Air and hydraulic braking systems and ABS systems diagnose and repair.
  • Heating and air conditioning systems.
  • Mack, International, and Cummins experience.
  • Suspension, steering, and ability to perform truck alignments.
  • Diesel emissions, DEF, and SCR diagnose and repair.
  • Transmission and rear end diagnose and repair.
  • Chassis, engine, transmission electrical diagnose and repair.
  • Allison, Eaton, and mDrive transmission diagnose and repair.
  • Able to use a laptop computer and a variety of programs for troubleshooting equipment.
  • Identifies the source of the malfunctions using a variety of electronic tools.
  • General engine repairs and being able to perform tune-ups, replace injectors, and rebuild is a plus.
  • Vehicle PM inspections and adjustments.

We offer competitive pay, 401k, vacation pay, holiday pay, health, vision, and dental insurance.

Ready to join the Tri-State Family?

Contact us at 601-932-3400 or

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