Diesel/Automotive Powertrain Diagnostic Technician

Job Description

Job Description

What your day could look like

It’s 7:55 a.m. in Tyler, TX. You clock in, open a work order, and plug into a truck running rough. Your laptop lights up with fault codes; you chase an aftertreatment hiccup, confirm the fix on a road test, and document the repair. After lunch, you pivot to a light-duty SUV with a steering pull, nail the alignment, and close the day collaborating with the advisor to keep turnaround times tight. If this sounds like your kind of rhythm, we’d like to meet you.

Express Employment Professionals is placing skilled technicians with both heavy-truck service centers and automotive repair shops across the Tyler area. Whether your passion is Class 6–8 diesel or passenger/light trucks, we have a bay with your name on it.

Diesel track: what you’ll handle

• Pinpoint engine, electrical, and aftertreatment issues with OEM/electronic diagnostic suites (including Cummins INSITE, Detroit Diesel DiagnosticLink/DDDL, ServiceMaxx).
• Rebuild and repair diesel engines, transmissions, drivelines, and fuel delivery systems.
• Service air brakes, suspension, steering, and HVAC on Class 6–8 equipment.
• Diagnose and correct DPF, DEF, and SCR emissions faults.
• Perform preventive maintenance services and DOT inspections.

Automotive track: what you’ll take on

• Use scan tools and test equipment to diagnose and repair cars and light trucks.
• Repair braking systems, suspension, steering, and perform precision alignments.
• Address engine, cooling, and electrical concerns quickly and correctly.
• Complete oil changes, tune-ups, and factory-scheduled maintenance.
• Service and repair A/C and HVAC systems.

For every technician

• Road test and inspect to validate repairs.
• Record parts, labor, and diagnostics accurately on repair orders.
• Partner with service advisors and teammates to keep cycle times low.

What you bring

• 2+ years of hands-on experience in automotive, diesel, or heavy-truck repair.
• ASE credentials preferred (A-series for auto, T-series for diesel).
• Proficiency with diagnostic equipment; diesel pros should be fluent with tools like Cummins INSITE, DDDL, or ServiceMaxx.
• Strong diagnostic instincts and meticulous attention to detail.
• Valid driver’s license with a clean record; CDL is a plus for diesel roles.
• Your own set of quality hand tools.

Areas where you excel

• Diagnosing and repairing electrical systems
• Vehicle electronics and computer control systems
• Engine performance, drivability, and repair
• Light-vehicle diesel systems
• Brake, suspension, and steering systems
• Preventive maintenance and comprehensive inspections
• Alternative-fuel system fundamentals
• Transmissions, transaxles, and drivetrain components (manual and automatic)
• General automotive repair
• ASE Automobile & Light Truck (A-series) exam readiness
• Advanced engine performance diagnostics
• Fuel delivery and injection systems
• Field service best practices
• Body and light collision repair fundamentals
• Ground Support Equipment (GSE) maintenance familiarity
• Diesel and heavy-equipment systems
• Hydraulic circuits and components
• Heavy-equipment electrical diagnostics
• Equipment-level diagnostics and troubleshooting
• Mechanical system and component repair
• Automotive manufacturing/production -line system awareness
• Automotive service process and workflow systems

Ready to roll?

Text “Auto or Diesel Mechanic” to View phone number on ziprecruiter.com to apply with Express Employment Professionals in Tyler, TX.