NewDiesel Mechanic Technician II Summit School ServicesDiesel Mechanic Technician IIAurora, ILYou’ll work across yellow-bus systems—preventive maintenance, air and hydraulic braking, steering/suspension, electrical/charging, HVAC, drivetrains/transmissions, and DVIR/state inspection readiness—balancing quality repairs with uptime so routes leave on time. • Diagnose and repair automotive and diesel systems — including brakes, steering, suspension, drivetrains, electrical, cooling, and fuel systems — according to skill level.
NewMaintenance Mechanic (3rd Shift) Alpha Baking Co., Inc.Maintenance Mechanic (3rd Shift)Chicago, ILExperience (Years/Type):Preferred minimum two years of experience in a manufacturing setting Must have general knowledge of maintenance functions such as electrical, plumbing, conveyors, motors/gearboxes, read schematics/blue prints. Skills:Electrical - troubleshooting knowledge of 3 phase 480VAC, control circuits of 110VAC and 24DC, AB PLCs.
NewAutomotive Mechanic CarmaxAutomotive MechanicHillside, IL$19.80–$38.90Where required by State/Local law, maintain ASE Certifications in Steering and Suspension (A4), Brakes (A5), Heating Air Conditioning (A7), Electrical (A6), Engine Repair (A1), Manual Drive Train and Axles (A3), Engine Performance (A8), and Automatic Transmission/Transaxle (A2). Associates considered full-time salaried are entitled to paid time away with no specified limit as needed for sick, vacation, bereavement, jury duty, holidays, floating holiday, etc.
NewAuto Technician / Mechanic CarmaxAuto Technician / MechanicNaperville, IL$19.80–$38.90Where required by State/Local law, maintain ASE Certifications in Steering and Suspension (A4), Brakes (A5), Heating Air Conditioning (A7), Electrical (A6), Engine Repair (A1), Manual Drive Train and Axles (A3), Engine Performance (A8), and Automatic Transmission/Transaxle (A2). Associates considered full-time salaried are entitled to paid time away with no specified limit as needed for sick, vacation, bereavement, jury duty, holidays, floating holiday, etc.
NewAuto Mechanic CarmaxAuto MechanicChicago, IL$19.80–$38.90Where required by State/Local law, maintain ASE Certifications in Steering and Suspension (A4), Brakes (A5), Heating Air Conditioning (A7), Electrical (A6), Engine Repair (A1), Manual Drive Train and Axles (A3), Engine Performance (A8), and Automatic Transmission/Transaxle (A2). Associates considered full-time salaried are entitled to paid time away with no specified limit as needed for sick, vacation, bereavement, jury duty, holidays, floating holiday, etc.
NewDealership Mechanic CarmaxDealership MechanicBrookfield, IL$19.80–$38.90Where required by State/Local law, maintain ASE Certifications in Steering and Suspension (A4), Brakes (A5), Heating Air Conditioning (A7), Electrical (A6), Engine Repair (A1), Manual Drive Train and Axles (A3), Engine Performance (A8), and Automatic Transmission/Transaxle (A2). Associates considered full-time salaried are entitled to paid time away with no specified limit as needed for sick, vacation, bereavement, jury duty, holidays, floating holiday, etc.
NewMechanic CarmaxMechanicBrookfield, IL$19.80–$38.90Where required by State/Local law, maintain ASE Certifications in Steering and Suspension (A4), Brakes (A5), Heating Air Conditioning (A7), Electrical (A6), Engine Repair (A1), Manual Drive Train and Axles (A3), Engine Performance (A8), and Automatic Transmission/Transaxle (A2). Associates considered full-time salaried are entitled to paid time away with no specified limit as needed for sick, vacation, bereavement, jury duty, holidays, floating holiday, etc.
NewDiesel Mechanic United RentalsDiesel MechanicLemont, IL$31–$53 / hourAs a Diesel Mechanic - Experienced (Service Tech IV), you'll use your skills to perform maintenance and repairs of complex equipment with limited or no supervision in a highly skilled, safe, and professional manner. Maintenance and repair of complex mechanical, electrical, hydraulic, and diesel systems on a variety of rental and customer equipment and tools while using a high degree of independent judgment.
Diesel Technician/Mechanic III - Entry Level PenskeDiesel Technician/Mechanic III - Entry LevelChannahon, ILFull timeWillingness to work the required schedule, work at the specific location required, complete Penske employment application, submit to a background screening (to include criminal checks, past employment and education), the ability to pass a drug screen and physical as required by the Department of Transportation, and potential travel within a near geography for training are required. • Doing preventative maintenance repairs—like replacing or rotating tires—and completing vehicle component lubrication and replacement, some electrical system repairs, and cooling system maintenance on gas and diesel engine vehicles.
NewAutomotive Technician / Mechanic Belle TireAutomotive Technician / MechanicVilla Park, IL$80,000–$100,000 / yearAs an Automotive Technician at Belle Tire, you do what it takes to keep life moving for our customers by providing expert automotive repairs and will thrive in a fast-paced, team-oriented environment focused on safety and quality. Perform automotive repairs on a variety of systems including engine repair, drive train/axles, suspension/steering, brakes, electrical, heating/air conditioning and engine performance.
NewBoiler & Facilities Mechanic Ecolab Inc.Boiler & Facilities MechanicNaperville, ILFormal vocational training in plant maintenance activities with an emphasis on industrial applications or equivalent job experience in electricity, power distribution, industrial electrical wiring, mechanics, machine operations, general plumbing, heating ventilation, and air conditioning, boiler operations. Operate and perform preventative maintenance and corrective maintenance/repair on high pressure boilers, turbines, high voltage generators, and auxiliary equipment at an on-site cogeneration plant that produces electricity.
NewMaintenance Mechanic / Bilingual Elite StaffingMaintenance Mechanic / BilingualGlendale Heights, ILBy submitting your application, you authorize Elite Staffing, Inc. to contact you using the contact information you have provided for employment-related activities via any method, including SMS, email, and phone calls, including through the use of automated technology, AI generative voice, and pre-recorded and/or artificial voice messages. Responsibilities: The production line mechanic will be responsible for all production maintenance, including product quality control, line maintenance, and repair of line machinery and equipment.
New2nd Shift Production Mechanic Pelton Shepherd Industries2nd Shift Production MechanicStreamwood, IL$28–$32 / hourPelton Shepherd Industries is a respected leader in specialty chemical manufacturing, partnering with top organizations to deliver high-quality, innovative solutions. Our success is built on operational excellence, and our maintenance team plays a critical role in keeping our production running safely and efficiently every day.
NewCNC Maintenance Mechanic III Ingersoll RandCNC Maintenance Mechanic IIIAlsip, ILCustomers lean on us for our technology-driven excellence in mission-critical flow creation and industrial solutions across 40+ respected brands where our products and services excel in the most complex and harsh conditions. We are committed to building an inclusive and diverse culture that engages as well as values the different backgrounds and experiences of our employee, which, in turn, spurs innovation, generates creative solutions and enhances our customer relations.
NewMaintenance Mechanic Tech I Powder Vapor Synthesis Nanophase Technologies CorporationMaintenance Mechanic Tech I Powder Vapor SynthesisBolingbrook, IL$25–$35 / hourPhysical Demands In order to adequately perform the duties and fulfill the responsibilities of this position, the employee will: Consistently required standing, walk, balance, stoop, kneel, crouch, crawl and lift up to 50 lbs. COMPENSATION The base hiring range for this position is: $25.00 – 35.00 per hour + $3 shift differential per hour The compensation offered will be determined by factors such as level, job-related knowledge, skills, and experience.
NewField Service Mechanic A (Truck Division) Herc Rentals IncField Service Mechanic A (Truck Division)Melrose Park, ILAbility to operate and test equipment such as boom lifts, forklifts, compressors, portable and stationary generators, hydraulics, pumps and assorted tools and equipment. You will serve as a go-to resource for utilizing your mechanical expertise to ensure Herc fleet remain in proper operating condition on our customer jobsites, at all times.
NewField Service Mechanic A Herc Rentals IncField Service Mechanic AChicago, ILAbility to operate and test equipment such as boom lifts, forklifts, compressors, portable and stationary generators, hydraulics, pumps and assorted tools and equipment. You will serve as a go-to resource for utilizing your mechanical expertise to ensure Herc fleet remain in proper operating condition on our customer jobsites, at all times.
Maintenance Mechanic 2nd Class (3rd Shift) Alpha Baking Co., Inc.Maintenance Mechanic 2nd Class (3rd Shift)Chicago, IL$31.39–$31.39 / hourOperate diagnostic and precision instruments to assess equipment performance and identify areas needing repair. Perform maintenance and repair work on bakery equipment, ensuring all machinery operates efficiently.
Maintenance Mechanic 2nd Class (2nd Shift) Alpha Baking Co., Inc.Maintenance Mechanic 2nd Class (2nd Shift)Chicago, IL$31.39–$31.39 / hourOperate diagnostic and precision instruments to assess equipment performance and identify areas needing repair. Perform maintenance and repair work on bakery equipment, ensuring all machinery operates efficiently.
NewMaintenance Mechanic- Competitve Pay Mauser Packaging SolutionsMaintenance Mechanic- Competitve PayChicago, IL$29–$42Inside conditions, extremes of heat (100+ seasonal), exposure to humidity, working in tight areas, high noise levels from production environment, including some exposure to outside weather elements, oil and dirt. The employee who occupies this position is expected to assume any / all duties assigned by management irrespective of whether such duties are specifically included in this list: Perform duties to set up, repair and maintain press line equipment.
NewMauser Packaging- Maintenance Mechanic- Competitive Pay Mauser Packaging SolutionsMauser Packaging- Maintenance Mechanic- Competitive PayChicago, IL$29–$42Inside conditions, extremes of heat (100+ seasonal), exposure to humidity, working in tight areas, high noise levels from production environment, including some exposure to outside weather elements, oil and dirt. The employee who occupies this position is expected to assume any / all duties assigned by management irrespective of whether such duties are specifically included in this list: Perform duties to set up, repair and maintain press line equipment.
NewMaintenance Mechanic- Great Benefits Mauser Packaging SolutionsMaintenance Mechanic- Great BenefitsChicago, IL$29–$42Inside conditions, extremes of heat (100+ seasonal), exposure to humidity, working in tight areas, high noise levels from production environment, including some exposure to outside weather elements, oil and dirt. The employee who occupies this position is expected to assume any / all duties assigned by management irrespective of whether such duties are specifically included in this list: Perform duties to set up, repair and maintain press line equipment.
NewMaintenance Mechanic - 2nd Shift Mauser Packaging SolutionsMaintenance Mechanic - 2nd ShiftChicago, IL$29–$42Inside conditions, extremes of heat (100+ seasonal), exposure to humidity, working in tight areas, high noise levels from production environment, including some exposure to outside weather elements, oil and dirt. The employee who occupies this position is expected to assume any / all duties assigned by management irrespective of whether such duties are specifically included in this list: Perform duties to set up, repair and maintain press line equipment.
NewMaintenance Mechanic - 1st Shift Mauser Packaging SolutionsMaintenance Mechanic - 1st ShiftChicago, IL$29–$42Inside conditions, extremes of heat (100+ seasonal), exposure to humidity, working in tight areas, high noise levels from production environment, including some exposure to outside weather elements, oil and dirt. The employee who occupies this position is expected to assume any / all duties assigned by management irrespective of whether such duties are specifically included in this list: Perform duties to set up, repair and maintain press line equipment.
NewAutomotive Technician- $5,000 Sign On Bonus CarmaxAutomotive Technician- $5,000 Sign On BonusElmhurst, IL$19.80–$38.90Where required by State/Local law, maintain ASE Certifications in Steering and Suspension (A4), Brakes (A5), Heating Air Conditioning (A7), Electrical (A6), Engine Repair (A1), Manual Drive Train and Axles (A3), Engine Performance (A8), and Automatic Transmission/Transaxle (A2). Associates considered full-time salaried are entitled to paid time away with no specified limit as needed for sick, vacation, bereavement, jury duty, holidays, floating holiday, etc.
Sr. Diesel Mechanic PTO & Immediate Healthcare! Waste Management IncSr. Diesel Mechanic PTO & Immediate Healthcare!Melrose Park, IL$30.31–$45.49 / hourRequired to be exposed to physical occupational risks (such as cuts, burns, exposure to toxic chemicals, etc.) often; Required to be exposed to physical environment which involves dirt, odors, noise, weather extremes or similar elements often; This job operates in both inside garage, shop or gas plant conditions as well as in outside conditions that include inclement weather, heat and humidity. WM has the largest disposal network and collection fleet in North America, is the largest recycler of post‑consumer materials and is a leader in beneficial use of landfill gas, with a growing network of renewable natural gas plants and the most landfill gas‑to‑electricity plants in North America.
Diesel Mechanic (CNG) Great Pay & Benefits! Waste Management IncDiesel Mechanic (CNG) Great Pay & Benefits!Matteson, IL$26.97–$40.46 / hourRequired to be exposed to physical occupational risks (such as cuts, burns, exposure to toxic chemicals, etc.) often; Required to be exposed to physical environment which involves dirt, odors, noise, weather extremes or similar elements often; This job operates in both inside garage, shop or gas plant conditions as well as in outside conditions that include inclement weather, heat and humidity. WM has the largest disposal network and collection fleet in North America, is the largest recycler of post‑consumer materials and is a leader in beneficial use of landfill gas, with a growing network of renewable natural gas plants and the most landfill gas‑to‑electricity plants in North America.
Diesel Mechanic 2nd Shift PTO & Benefits! Waste Management IncDiesel Mechanic 2nd Shift PTO & Benefits!Cicero, IL$26.97–$40.46 / hourRequired to be exposed to physical occupational risks (such as cuts, burns, exposure to toxic chemicals, etc.) often; Required to be exposed to physical environment which involves dirt, odors, noise, weather extremes or similar elements often; This job operates in both inside garage, shop or gas plant conditions as well as in outside conditions that include inclement weather, heat and humidity. WM has the largest disposal network and collection fleet in North America, is the largest recycler of post‑consumer materials and is a leader in beneficial use of landfill gas, with a growing network of renewable natural gas plants and the most landfill gas‑to‑electricity plants in North America.
2nd Shift Diesel Mechanic Waste Connections Inc2nd Shift Diesel MechanicAurora, ILTo excel in this 2nd shift diesel mechanic role, you should bring: • Hands-on experience with diesel truck diagnostics, preventive maintenance, and repairs • Hydraulic system experience (preferred but not required) • Ability to work in all weather conditions • Ability to lift at least 50lbs repeatedly. In this role, you'll perform essential fleet maintenance and diesel truck repair to keep our drivers safe and our operations running smoothly.
Automotive Mechanic - Technician Car GuysAutomotive Mechanic - TechnicianCarol Stream, IllinoisWHAT OUR CLIENTS OFFER * Top Pay for Automotive Technicians and Auto Mechanics * Industry-leading compensation for service technicians * Signing bonuses and performance-based incentives * Modern Automotive Shops * Advanced diagnostic tools and equipment * High-volume service departments * Work on domestic, import, diesel, and electric vehicles * Career Growth for Automotive Technicians * Paid training, including EV and diagnostic training * ASE certification support * Advancement to Master Technician and Shop Foreman roles *** WHY WORK WITH CARGUYS INC. Experience with automatic transmission, manual transmission, drivetrain and axle repair, suspension and steering systems, brake repair, electrical systems, and electronic diagnostics is required.
NewMobile Diesel Mechanic/Technician (2027) Kooner Fleet Management SolutionsMobile Diesel Mechanic/Technician (2027)Joliet, IL$32–$38 / hourGeared up with your own, fully equipped company service truck, top-tier tools, and a supportive team that values your skill, drive and dedication, you'll tackle new challenges every day and take pride in delivering safe, reliable and efficient service that keeps America moving. With nearly a decade of industry experience, Kooner FMS helps fleets reduce downtime, extend vehicle life, and simplify operations through proactive maintenance programs and advanced technology.
Diesel Mechanic/Technician (2001) Kooner Fleet Management SolutionsDiesel Mechanic/Technician (2001)Romeoville, ILWith nearly a decade of industry experience, Kooner FMS helps fleets reduce downtime, extend vehicle life, and simplify operations through proactive maintenance programs and advanced technology. Backed by a supportive team that values your skill, drive and dedication, you’ll tackle new challenges every day and take pride in delivering safe, reliable and efficient service that keeps America moving.
Mobile Diesel Mechanic/Technician (1996) Kooner Fleet Management SolutionsMobile Diesel Mechanic/Technician (1996)Chicago, ILGeared up with your own, fully equipped company service truck, top-tier tools, and a supportive team that values your skill, drive and dedication, you’ll tackle new challenges every day and take pride in delivering safe, reliable and efficient service that keeps America moving. With nearly a decade of industry experience, Kooner FMS helps fleets reduce downtime, extend vehicle life, and simplify operations through proactive maintenance programs and advanced technology.
Diesel Mechanic Fields Auto GroupDiesel MechanicOrland Park, ILCommercial Van Experience preferred, but not required • A-level qualifications, including Diagnostic, Electrical, and Engine Repair • Excellent customer service skills • Basic Computer skills • Positive, friendly attitude, along with a customer service mentality • Enjoy working in a fast-paced environment • Team player • Valid Drivers License with an acceptable motor vehicle driving record according to dealership guidelines. • Perform work specified on the repair order with efficiency and in accordance with the dealership • Test-drive vehicles, and test components and systems, using diagnostic tools and special service equipment • Diagnosing, maintaining, and repairing vehicle automotive systems, including engine, transmission, electrical steering, suspension, brakes, air conditioning, etc.
Experience Diesel Mechanic Swift Transportation Co LLCExperience Diesel MechanicGary, IN$23–$30 / hourWe're one of the biggest fleets on the road and we make our presence known, with more than 13,000 trucks, 60,000 trailers, 12,000 company drivers, and over 700 Fleet Technicians. Complete a quality preventative maintenance inspection and repairs on all company owned equipment, to include tractors, trailers, refrigerated units and support equipment.
Journeyman Diesel Mechanic - Second Shift Interstate CompaniesJourneyman Diesel Mechanic - Second ShiftCarol Stream, IL$30–$47.90 / hourDiagnose and Repair: Troubleshoot complex mechanical, hydraulic, electrical, and electronic systems on heavy-duty diesel trucks using advanced diagnostic tools, schematics, and technical manuals (e.g., Cummins Insite, Detroit Diesel Diagnostic Link). Perform Maintenance: Conduct routine preventive maintenance, including oil changes, filter replacements, tire inspections, brake adjustments, and chassis lubrication to ensure truck reliability and compliance with federal and state regulations.
Level 1 - Union Diesel Mechanic LyonsLevel 1 - Union Diesel MechanicLyons, IllinoisWe're the largest network of commercial vehicle dealerships in the U.S. With a strong reputation and deep industry roots, we provide our technicians with stability, opportunity, and a supportive work environment. In this entry-level role, you’ll support our lead and journeyman technicians while building hands-on skills in diagnostics, repair, and heavy-duty vehicle maintenance.
Diesel Mechanic Airgas IncDiesel MechanicIL$28–$31 / hour2+ years experience in highway equipment maintenance Experience with a variety of basic hand, power tools and equipment Must have own hand tools Must be able to communicate in English, both verbally and written; ability to read/understand English Preferred Qualifications High school diploma or GED equivalent; technical school classes preferred Basic knowledge of transportation regulations Class A CDL with HazMat; DOT brake certification preferred (Not Required) Computer literacy; Google Chrome, TMT, on-board OEM computer diagnosis systems Someone with solid diagnostic experience in ABS and DEF systems, including maintenance software programs, is driven by results and could excel in the office and on the shop floor. This is evident not only through our competitive compensation but also through a comprehensive benefits package that includes medical, dental, and vision plans, short-term and long-term disability, life and accidental death and dismemberment (AD&D) insurance, Employee Assistance Program (EAP), pre-tax commuter transportation benefit, parental leave, vacation, sick time, floating holidays, jury duty and funeral/bereavement leave, and paid holidays for all eligible full-time employees.
NewUnion Diesel Mechanic Rush EnterprisesUnion Diesel MechanicJoliet, ILThe apprentice shall be put on work commonly known as Journeyman Mechanic's work so that at the end of the apprenticeship, the apprentice shall be a qualified Journeyman Mechanic. Benefits: We provide comprehensive benefits and pension packages through the Local 701 Automobile Mechanics Union in accordance with the terms of the 701 Union Agreement.
NewDiesel Mechanic Pros MechanicsDiesel MechanicCrestwood, IllinoisPerform routine maintenance and repairs on diesel engines, including oil changes, filter replacements, and system diagnostics; replace and repair major internal engine components, transmission repairs, and rebuilds. We are seeking Experienced Diesel Mechanics for our repair facility in Crestwood, IL, to repair our fleet of semi -trucks and trailers.
Journeyman Diesel Mechanic Interstate Companies, Inc.Journeyman Diesel MechanicCarol Stream, ILKey Responsibilities: Diagnose and Repair: Troubleshoot complex mechanical, hydraulic, electrical, and electronic systems on heavy-duty diesel trucks using advanced diagnostic tools, schematics, and technical manuals (e.g., Cummins Insite, Detroit Diesel Diagnostic Link). Perform Maintenance: Conduct routine preventive maintenance, including oil changes, filter replacements, tire inspections, brake adjustments, and chassis lubrication to ensure truck reliability and compliance with federal and state regulations.
NewMobile Diesel Mechanic Rockstar RecruitingMobile Diesel MechanicMelrose Park, IllinoisYou’ll be working on diesel trucks, handling diagnostics, repairs, PMs, electrical, brakes, suspension, and general fleet work. We’re looking for a solid Mobile Diesel Mechanic who knows their way around trucks and fleet equipment and can work without someone holding their hand all day.
Experienced Diesel Mechanic Swift Transportation Co LLCExperienced Diesel MechanicIL$22–$31 / hourAs an Experienced Diesel Mechanic Complete a quality preventative maintenance inspection and repairs on all company owned equipment, to include tractors, trailers, refrigerated units and support equipment. Disassemble, repair and re-assemble of Heavy Truck & Trailer components; including but not limited to; refrigerated units, diesel engines, transmissions, axles and any other components or systems.
Diesel Mechanic Saia IncDiesel MechanicBurr Ridge, IL$33.50–$38.10 / hourRead, write, communicate and comprehend the English language in order to perform the various tasks of the job, including but not limited to: converse with co-workers and members of the general public; understand oral and written instructions as well as governmental regulations; respond to questions and inquiries from management and government representatives; and accurately review and complete various documents, reports and records required of the position. Troubleshoots the repairs of heavy-duty truck engines, braking, electrical, and exhaust systems.
Diesel Mechanic The Custom Companies IncDiesel MechanicIL$26–$34 / hourOur shop prioritizes safety, quality repairs, and realistic workloads, offering long-term stability, respect for your craft, and opportunities to grow your skills. Location: Northlake, IL 60164 Pay Rate: $26.00 - $34.00 Hourly Open Positions: 1 Days Worked: Mon., Tue., Wed., Thu., Fri., Sat.
NewDiesel Mechanic Mercedes Benz of Orland ParkDiesel MechanicOrland Park, ILDiagnosing, maintaining, and repairing vehicle automotive systems, including engine, transmission, electrical steering, suspension, brakes, air conditioning, etc. Test-drive vehicles, and test components and systems, using diagnostic tools and special service equipment .
Journeyman Diesel Mechanic - Second Shift Interstate Companies IncJourneyman Diesel Mechanic - Second ShiftCarol Stream, IL$30–$47.90 / hourDiagnose and Repair: Troubleshoot complex mechanical, hydraulic, electrical, and electronic systems on heavy-duty diesel trucks using advanced diagnostic tools, schematics, and technical manuals (e.g., Cummins Insite, Detroit Diesel Diagnostic Link). Perform Maintenance: Conduct routine preventive maintenance, including oil changes, filter replacements, tire inspections, brake adjustments, and chassis lubrication to ensure truck reliability and compliance with federal and state regulations.
Diesel Mechanic Trainee Entry Level RyderDiesel Mechanic Trainee Entry LevelRomeoville, IllinoisFull timeAttend and complete all Technician Training Development Program requirements and assessments; training will include hands-on and online training as well as performing tasks learned; Technician Training Development Program will include but is not limited to: Service Island Training: Service island multi-point inspection (includes hand held). Perform multi-point inspection on inbound units as required by company policies and procedures; this includes checking vehicle tire pressure and thread, fluid levels, lights, washing vehicle windows, changing tires, inspecting refrigeration units on trucks, and reporting service or driver issues to shop.
Journeyman Diesel Mechanic - Second Shift Interstate Companies, IncJourneyman Diesel Mechanic - Second ShiftCarol Stream, IL$30–$47.90 / hourDiagnose and Repair: Troubleshoot complex mechanical, hydraulic, electrical, and electronic systems on heavy-duty diesel trucks using advanced diagnostic tools, schematics, and technical manuals (e.g., Cummins Insite, Detroit Diesel Diagnostic Link). Perform Maintenance: Conduct routine preventive maintenance, including oil changes, filter replacements, tire inspections, brake adjustments, and chassis lubrication to ensure truck reliability and compliance with federal and state regulations.