Precision Diesel Repair
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Mobile Diesel Truck Repair in Whittier CA

Precision Diesel brings professional, certified mobile diesel truck repair to Whittier and surrounding areas. Whether you’re a fleet manager, independent hauler, or equipment operator, our ASE-certified technicians come to you for fast, reliable service. From rural job sites to light industrial parks, we handle diesel fleet repairs and diagnostics with industry-grade tools—all from our mobile service trucks.
Get a Quote Today

Call today for a schedule of services and rates: 714-878-2571

Trusted Diesel Truck & Equipment Mechanics in Whittier, ca

Local truckers and fleet managers in Whittier trust Precision Diesel for one reason: we show up ready to get you back on the road—fast. We’re based just 9.2 miles away at our La Palma truck repair shop, but most of our work happens right here in Whittier through our fully-equipped mobile service fleet. Whether you’re managing logistics in an industrial park or broke down on a rural access road, we’re minutes away. Call 714-878-2571 or BOOK AN APPOINTMENT today.
Whittier CA mobile mechanics

Diesel Truck Repair Across Whittier’s Roads & Routes

Whittier is a city in Los Angeles County, California, and is part of the Gateway Cities. Whittier was incorporated in February 1898 and became a charter city in 1955.

From Whittier Boulevard to the I-605 and side roads through Los Nietos and South Whittier, our mobile diesel techs navigate every kind of terrain. Whether you’re at a construction site near the Puente Hills Landfill, a fleet yard near Washington Blvd, or on a delivery route by Pioneer Blvd—we’ll find you and fix you fast. Our proximity to major transport corridors and distribution zones allows us to respond quickly and efficiently. Contact us today for fast diesel truck repair expert in Whittier.

Onsite Diesel Repair Near You in Whittier, CA

Precision Diesel is your local diesel mechanic near you with expert mobile truck service you can count on. Our ASE-certified mobile techs are equipped with laptop-based diagnostics and advanced tooling to troubleshoot and repair at your location—job sites, yards, rural lots, or roadside. Flexible scheduling and emergency response come standard. Call 714-878-2571 or BOOK AN APPOINTMENT.

TRUCK REPAIR NEAR YOU

Aside from Orange County, we also serve cities across Los Angeles County, including Artesia, Azusa, Baldwin Park, Bell, Bell Gardens, Bellflower, Carson, Cerritos, Claremont, Commerce, Compton, Covina, Cudahy, Culver City, Downey, El Monte, El Segundo, Gardena, Hawaiian Gardens, Hawthorne, Hermosa Beach, Huntington Park, City of Industry, Inglewood, Irwindale, La Habra Heights, La Mirada, La Puente, La Verne, Lakewood, Lawndale, Lomita, Long Beach, Los Angeles, Lynwood, Manhattan Beach, Maywood, Monrovia, Montebello, Monterey Park, Norwalk, Paramount, Pasadena, Pico Rivera, Pomona, Redondo Beach, Rolling Hills, Rolling Hills Estates, Rosemead, San Dimas, San Gabriel, Santa Fe Springs, Santa Monica, Signal Hill, South El Monte, South Gate, South Pasadena, Temple City, Torrance, Vernon, Walnut, West Covina, West Hollywood, Whittier

CALL NOW FOR SHOP AVAILABILITY & PRICING

Call 714-878-2571

Built on Trust: The Local Edge You Deserve

Hiring a local Whittier team means fewer delays, more accountability, and clean, courteous service. Our techs respect your time and your site—no grease trails, no excuses. Precision Diesel is licensed, insured, and backed by 20+ years of experience. Book with confidence and trust your repair to someone who actually knows Whittier.

Full-Service Diesel Mechanics for Whittier Fleets & Trucks

Fleet managers in Whittier count on us for reliable, mobile maintenance and roadside repairs. From one truck to 100, we keep your operation moving. We offer fleet maintenance, heavy-duty diagnostics, and emergency repairs using OEM tools and ASE-certified expertise. Searching diesel mechanic near you? We’re the crew you want. Visit our La Palma location or call us 714-878-2571 today.

Powered by Expertise: No Guesswork, Just Fixes

Our mobile units arrive with real diesel laptop scanners and know-how that comes from years on the job. We’ve worked every kind of route, rig, and roadside situation around Whittier. Licensed, insured, and experienced—count on Precision Diesel to deliver results you can trust.

Our Diesel Services in Whittier CA

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Fleet Maintenance

Custom maintenance plans for your Whittier fleet to keep downtime low and performance high.

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Roadside Assistance

Emergency diesel truck repair and breakdown services across Whittier’s highways and backroads.

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Preventative Maintenance

Catch small issues before they become costly. Routine checks, fluids, belts, and filters handled onsite.

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Compliance Inspections

Stay compliant and avoid fines with thorough and timely inspections tailored for your operation.

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DOT Inspection Whittier

Need a certified DOT diesel inspection in Whittier? We bring the tools and certifications to your lot.

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Belt Inspection Tustin

Prevent breakdowns and overheating with regular belt inspections for diesel engines and trailers.

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Trailer Repair Whittier

From axle issues to brake lines, we offer full-service trailer repair anywhere in Whittier.

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Heavy Equipment Repair

Construction teams trust us with diesel-powered lifts, backhoes, and more—all fixed where they sit.

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Welding & Fabrication

Mobile welding and fabrication for diesel chassis, trailers, and equipment repairs in Whittier.

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Chassis Repair Whittier

Frame repair and chassis service done on-location with expert welding and structural inspection.

Diesel Truck Repairs in Whittier CA

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General Diesel Repair

Whether it's your turbo, fuel lines, or injectors, we’ve got it covered with fast mobile diagnostics.

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Electronic Data Log

EDL troubleshooting and setup done right with laptop tools that integrate with your diesel rig.

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Oil & Filter / Lubrication

Affordable oil change in Whittier for diesel trucks done at your yard or roadside.

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Brake Repair Whittier

Complete brake inspections, repairs, and air system servicing done on the go.

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EGR Filter Cleaning

We clean and test your EGR filters to keep your truck emissions-compliant and efficient.

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DPF Filter Cleaning

Avoid costly replacements—our Whittier DPF cleaning services keep your filter working.

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Exhaust System Repair

We fix leaks, replace mufflers, and inspect full exhaust systems wherever you're parked.

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HVAC Systems Repair

HVAC system repair in Whittier for trucks that need cold air fast. Keep your cab comfortable year-round.

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Engine Repair Whittier

Top-end or full-engine services for diesel trucks and equipment done with accuracy and speed.

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Suspension Repair

From leaf springs to shocks, we repair suspension systems to get you rolling steady again.

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Engine Computer Diagnostics

Real diesel laptop scanners and certified techs ensure no guessing—just expert results.

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Coolant System Repair

Overheating? We fix coolant leaks, flush systems, and replace hoses without a tow.

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Clean Truck Check

Emissions testing and repairs done to meet California clean truck standards.

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Truck Parts & Accessories

Need truck parts in Whittier? We source and install OEM or aftermarket parts onsite.

Hear From Our Satisfied Customer Testimonials.

With over 20 years of experience, you can count on us to provide the most effective solution to your truck, trailer, chassis, and heavy equipment needs.

Diesel Repairs for Local Fleets, Equipment & Trucks in Whittier, ca

Whittier businesses depend on fast, accurate service—so we deliver. Our team of ASE-certified diesel mechanic technicians specializes in heavy duty diesel repair and diagnostics using advanced diesel laptop scanner tools. Whether you’re searching for diesel repair near you in Whittier or need emergency roadside repair, we provide reliable, full-scale support across Whittier’s construction zones, logistics yards, and freight corridors. For the best in diesel service, diagnostics, and mobile convenience, call 714-878-2571 Precision Diesel today.

Reliable By Nature: The Mobile Standard

Whittier customers choose us for clean, respectful service with a neighborhood feel. Unlike big chains, our small mobile team puts your uptime first—and treats your fleet like our own. We’re licensed, insured, and backed by over two decades of hands-on diesel experience. Book today with confidence.

Why Partner with Whittier Precision Diesel?

At Precision Diesel in Whittier, we put customers first.

MOBILE REPAIR

means you never waste time towing to a shop.

Fast ETAs

mean we arrive when we say we will—no runarounds.

Advanced Tools

mean we fix it right the first time with real diagnostics.

Pricing

means no surprise fees or gimmicks—just solid value.

Local Know

means we know Whittier’s roads, yards, and job sites like the back of our hands.

Reliable Diesel & Auto Repair in Whittier

Need diesel or gas service in Whittier? We handle both. Our ASE-certified team services Cummins, Mack, Volvo, Western Star and more—with laptop diagnostics and warranty-backed repairs. Whether you’re looking for a diesel mechanic shop or general auto repair in Whittier, Precision Diesel is the name locals trust.

What Sets Precision Diesel Apart in Whittier ca

We’re proud to serve Whittier with mobile diesel and heavy-duty truck repairs. From warranty coverage and after-hours drop-off to towing and preventive maintenance—we go beyond the basics. Every job includes quality control and second-opinion transparency, backed by a satisfaction guarantee. Our local team performs DOT inspections in Whittier and supports truckers, fleets, and contractors with flexible solutions that save time and money.

Get In Touch

Call or text 714-878-2571. Or complete the form below for more information about our mobile diesel truck repair and fleet maintenance services Whittier, CA​.
Tailored Solutions for Local Diesel Needs
We serve the real-world diesel needs of Whittier—not a corporate script. Our clean, respectful, and experienced crew brings 20+ years of licensed and insured repair expertise directly to you. Skip the wait and let Whittier’s own Precision Diesel get your rig road-ready today.
Book a Local Diesel Technician in Whittier Today
Ready for responsive, mobile diesel service in Whittier? Contact us today to speak directly with a certified diesel tech or BOOK AN APPOINTMENT now. Call 714-878-2571 for quick dispatch, honest quotes, and affordable on-location truck repairs. From Whittier fleet maintenance to roadside breakdown services—we’re the go-to diesel team near you.
Manufacturers we service
Allison_Transmission
Cummins
Detroit
International
Mack
Peterbilt
Volvo
Western Star
eaton
Freightliner