Diesel Technician (Diesel Mechanic)

Western Truck Center; Stockton (CA); On-site; USD 30,000 - 47,000; Full time

Benefits offered by this job

Health benefits

Pay & bonuses

Boot allowance

401(k) with company match

Job summary

Dobbs Truck Group is seeking a Diesel Technician to diagnose, repair, and maintain heavy-duty trucks and equipment. This hands-on role supports independent work while growing diagnostic expertise, with opportunities across a network of dealerships including Dobbs Peterbilt and Western Truck Center.

The position emphasizes mechanical and electrical diagnostics, engine and drivetrain repairs, preventive maintenance, and careful documentation.

Qualifications

• 3 years of mechanical experience or trade/technical school training.
• High school diploma or GED.
• Strong mechanical and diagnostic skills.
• Ability to work independently and in a team environment.
• Required tool set.

Responsibilities

• Diagnose mechanical and electrical issues on diesel trucks.
• Perform repairs on engines, transmissions, drivetrains, and fuel systems.
• Troubleshoot advanced systems including electrical and aftertreatment.
• Perform preventative maintenance and scheduled services.
• Maintain a clean and organized work area.
• Accurately document work performed and repairs completed.

Skills

Strong mechanical and diagnostic

Independent & teamwork

Education

High school diploma or GED

3 years mechanical experience or trade/technical school training

Job description

Description

Kickstart Your Career with Dobbs Truck Group

Hands-on work. Advanced diagnostics. Take your diesel technician career to the next level.

Dobbs Truck Group operates 24 commercial truck dealerships through Dobbs Peterbilt and Western Truck Center across multiple states. We represent leading brands including Peterbilt, Volvo, Mack, Autocar, and Hino, and are committed to building a high-quality team and long‑term careers.

Why Join Dobbs Truck Group

• Career Growth: OEM training
• Health Benefits: Medical, Dental, Vision, HSA, Life & Disability coverage
• Pay & Rewards: Competitive pay, performance bonuses, boot allowance
• Future Focus: 401(k) with company match + financial planning resources
• Work-Life Balance: Paid holidays, vacation, and support programs

Additional benefits may be available based on role and eligibility.

About the Role

The Diesel Technician is responsible for diagnosing, repairing, and maintaining heavy‑duty trucks and equipment.

This role is designed for technicians with developing to advanced skill levels who are capable of working independently while continuing to grow their expertise in diagnostics and complex repairs.

What You’ll Do

Diagnostics & Repairs

• Diagnose mechanical and electrical issues on diesel trucks
• Perform repairs on engines, transmissions, drivetrains, and fuel systems
• Troubleshoot advanced systems including electrical and aftertreatment

Maintenance & Service

• Perform preventative maintenance and scheduled services
• Complete repairs on brakes, suspension, HVAC, and related systems
• Inspect vehicles and identify repair needs

Electrical Systems

• Diagnose and repair electrical components and wiring
• Test and replace batteries, starters, alternators, and lighting systems

Shop Responsibilities

• Follow shop procedures and safety standards
• Maintain a clean and organized work area
• Accurately document work performed and repairs completed

What You Bring

• 3 years of mechanical experience or trade/technical school training
• High school diploma or GED
• Strong mechanical and diagnostic skills
• Ability to work independently and in a team environment
• Required tool set

Preferred Experience

• Experience with heavy‑duty trucks or equipment
• Knowledge of diagnostic systems and tools
• Experience performing DOT inspections and preventative maintenance

Work Environment

This is a hands‑on shop role that includes:

• Working with heavy equipment and mechanical systems
• Frequent standing, lifting 50+ pounds, and physical activity
• Exposure to noise, heat, and shop conditions

Career Growth

We invest in our technicians and promote from within:

Diesel Technician >> Journeyman Technician

We are an Equal Opportunity Employer

Dobbs Peterbilt and Western Truck Center are equal opportunity employers that values a broad diversity of talent, knowledge, experience, and expertise. We foster a culture of inclusion that drives employee engagement to deliver superior performance to the communities we serve. Dobbs Peterbilt and Western Truck Parts do not discriminate in hiring or employment on the basis of race, color, religious creed, national origin, sex, ancestry, pregnancy, genetic information, gender identity, sexual orientation, or marital status; or on the basis of age against persons whose age is 40 and over, or on the basis of physical or mental disability; or to disabled veterans or to Vietnam veterans. We are proud to be an affirmative action employer and encourage minorities, women, individuals with disabilities, and veterans to join our team.