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Diesel Optimization Jobs in Illinois (NOW HIRING)

CIT Trucks

Diesel Service Technician

Loves Park, IL · On-site

$21.75 - $40.50/hr

Responsibilities of a Diesel Technician entail: * Perform thorough diagnostics, troubleshooting ... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ...

CIT Trucks

Diesel Service Technician

Loves Park, IL · On-site

$21.75 - $40.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Morton, IL

$21.75 - $40.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Normal, IL · On-site

$21.75 - $40.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Wood Dale, IL · On-site

$24.50 - $45.75/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Mount Sterling, IL · On-site

$21.25 - $39.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Springfield, IL · On-site

$21.75 - $40.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Peru, IL · On-site

$21.75 - $40.50/hr

Responsibilities of a Diesel Technician entail: * Perform thorough diagnostics, troubleshooting ... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ...

CIT Trucks

Diesel Service Technician

Springfield, IL · On-site

$21.75 - $40.50/hr

Responsibilities of a Diesel Technician entail: * Perform thorough diagnostics, troubleshooting ... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ...

CIT Trucks

Diesel Service Technician

Normal, IL · On-site

$21.25 - $39.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Joliet, IL

$24.50 - $45.75/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Peru, IL

$21.75 - $40.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Mokena, IL · On-site

$24 - $44.75/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Morton, IL · On-site

$21.75 - $40.50/hr

Responsibilities of a Diesel Technician entail: * Perform thorough diagnostics, troubleshooting ... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ...

CIT Trucks

Diesel Service Technician

Grayslake, IL · On-site

$24.50 - $45.75/hr

Responsibilities of a Diesel Technician entail: * Perform thorough diagnostics, troubleshooting ... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ...

CIT Trucks

Diesel Service Technician

Normal, IL · On-site

$21.75 - $40.50/hr

Responsibilities of a Diesel Technician entail: * Perform thorough diagnostics, troubleshooting ... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ...

CIT Trucks

Diesel Service Technician

Troy, IL · On-site

$23.50 - $44/hr

Responsibilities of a Diesel Technician entail: * Perform thorough diagnostics, troubleshooting ... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ...

CIT Trucks

Diesel Service Technician

Loves Park, IL · On-site

$21.75 - $40.50/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

CIT Trucks

Diesel Service Technician

Joliet, IL · On-site

$24.50 - $45.75/hr

... optimal vehicle performance and longevity. * Complete accurate and detailed documentation of work ... to become a Diesel Technician at CIT Trucks, LLC include: * Preventive maintenance experience ...

Truck Centers, Inc.

Mobile Diesel Mechanic

Springfield, IL · On-site

$26.56 - $39.84/hr

As a Mobile Diesel Mechanic at Truck Centers, Inc., you'll be a key player in providing exceptional ... bringing vehicles back to optimal condition. * Repair Key Truck Systems: From engines and ...

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Infographic showing various Diesel Optimization job openings in Illinois as of June 2026, with employment types broken down into 58% Full Time, and 42% Contract. Highlights an 100% In-person job distribution.

Diesel Service Technician

CIT Trucks

Loves Park, IL • On-site

$21.75 - $40.50/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 24 days ago

CIT Trucks rating

7.2

Company rating: 7.2 out of 10

Based on 10 frontline employees who took The Breakroom Quiz

57th of 155 rated car dealerships

Job description

Description:

At CIT Trucks, LLC, we fuel the engine of the American economy. With the trucking industry moving a staggering 76% of the nation’s goods, we are looking for competitive, high-velocity individuals ready to dominate with a premier Midwest leader. This isn’t just a job; it’s a high-impact career path backed by the massive purchasing power of a $38 million inventory and a proven track record of selling over 4,000 trucks annually.

Our team operates at a scale few can match, supported by over 360 professional service bays and a network of state-of-the-art body shops delivering elite-level craftsmanship. We are a dominant force across Illinois, Missouri, and Indiana, with 16 locations and a powerhouse workforce of 900+ employees. With revenues already exceeding $920 million and a clear trajectory to surpass $1 billion in the coming years, we are looking for the next generation of leaders to help us get there.


Why CIT Trucks? Your Path to the Top:

  • Join a Winning Legacy: Be a vital part of a rapidly growing company with a rock-solid track record of success.
  • Master Your Craft: Receive elite, comprehensive training and development designed to make you an industry expert.
  • Limitless Growth: We don't just hire; we promote. Advance your career through aggressive internal opportunities.

If you have the drive to match our volume and the motivation to support a critical national industry, CIT Trucks is where you belong.


Responsibilities of a Diesel Technician entail:

  • Perform thorough diagnostics, troubleshooting, and repair of diesel engines, transmissions, electrical systems, and other medium-duty and heavy-duty vehicle components.
  • Conduct preventative maintenance according to manufacturer recommendations and company standards, ensuring optimal vehicle performance and longevity.
  • Complete accurate and detailed documentation of work performed, including service records, parts used, and labor hours.
  • Adhere to strict safety protocols in the work environment, maintaining a clean workspace and properly utilizing tools and equipment.
  • Complete online training courses and attend instructor-led classes to advance your career.
  • Collaborate with the service team to provide exceptional customer service and prioritize the timely completion of repairs.

CIT Trucks, LLC. provides a comprehensive wage and benefits package that includes:

  • Boot reimbursement at $150 annually
  • Prescription safety glasses up to $175 annually
  • Tool assistance program
  • Paid holidays and PTO
  • Choice between 3 wide-ranging medical plans with prescription coverage
  • Option to participate in HSA or FSA savings accounts
  • Access to dental and vision insurance
  • Short- and long-term disability coverage
  • Company paid life insurance, as well as additional voluntary life insurance for self and family
  • 401(k) retirement planning that has a dollar-for-dollar employer match up to 4%
Requirements:

Requirements to become a Diesel Technician at CIT Trucks, LLC include:

  • Preventive maintenance experience required
  • Must be at least 18 years old
  • High School diploma or GED required
  • Must have and maintain a valid driver’s license
  • Ability to obtain a Commercial Driver’s License (CDL) and DOT medical card
  • Ability to lift, carry and move objects up to 120 pounds
  • Ability to work in a fast-paced environment and maintain attention to detail

#IND2

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