25+ Years Mobile Truck Repair
Truck & Trailer Repair in Phoenix, AZ — Shop & Mobile Service
Semi truck repair, mobile diesel mechanics & roadside assistance across the Phoenix metro
Family-owned diesel mechanics with fully equipped mobile units. We come to your breakdown — no towing, no waiting.
- 600+ Google reviews
- Since 1999
- Shop + mobile units
Truck down? Get help fast
Leave your number and we'll call you right back.
Our Mobile Diesel Mechanic Services
Explore our comprehensive range of diesel mechanic services. Specializing in semi repair, diesel engine, DOT inspections, preventive maintenance, and complete commercial fleet services, our team ensures your heavy-duty vehicles meet the highest standards of safety and efficiency — on-site at your location.
Roadside Assistance
Truck down? We dispatch a mobile mechanic to your breakdown anywhere in the Phoenix metro.
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Mobile Truck Repair
We bring the shop to you. 100% mobile service covering all of Phoenix and the surrounding metro.
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Semi Truck Repair
Professional repair for all major brands including Peterbilt, Kenworth, Freightliner, Mack, Volvo, and more.
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Diesel Engine Repair
Expert diagnostics, overhaul, and rebuilds for heavy-duty diesel engines to get you back on the road fast.
View service →More services we offer
Specialized truck repairs: Engine Repair · Transmission & Clutch · Brake Repair · Suspension Repair · Axle Repair · Driveline Repair · Diagnostics & Electrical · Hydraulic Repair · EGR & DPF Repair · Exhaust System Repair · Coolant System Repair · HVAC / A/C Systems
Transmissions, DOT Inspections, Diesel Pushers & More
Beyond everyday semi and trailer repair, our Phoenix shop handles the jobs many shops send out — gearbox repair, automated transmission calibration, mobile DOT inspections and heavy-chassis motorhome work.
Eaton Fuller Transmissions
10, 13 & 18-speed manuals rebuilt and repaired in our shop.
Learn more →Automated Transmissions
DT12, I-Shift, Endurant, UltraShift & mDRIVE — codes, calibration, actuators.
Learn more →Mobile DOT Inspections
Annual inspections at your yard — fewer trucks off the road.
Learn more →Diesel Pushers & Motorhomes
Engine, transmission, chassis, air brakes and Onan generators.
Learn more →Reefer Repair
Carrier and Thermo King units on the road or in the shop.
Learn more →Mobile Tire Change
Semi, trailer and RV tires changed where you stopped.
Learn more →Recent Jobs Around Phoenix
- 📍 Tolleson
Automated 12-speed stuck with a fault code — towed in for diagnosis and calibration.
✓ Towed to shop - 📍 Gilbert
Peterbilt 579 with a broken driveshaft carrier bearing — repaired without a tow.
✓ Mobile repair - 📍 I-17 & Buckeye Rd
Peterbilt 379 with damaged wheel studs — studs and lug nuts replaced on site.
✓ Fixed on site - 📍 West Phoenix
Blown tires on an RV tow trailer — new tires mounted where it was parked.
✓ Fixed on site - 📍 Central Phoenix
Delivery truck with an air line leak — repaired so the route could continue.
✓ Same day - 📍 Phoenix shop
Freightliner-chassis motorhome with a dash blower failure.
✓ Same day
Truck Down? Here’s What Happens When You Call
Call us
Tell us what’s wrong and where the truck is — on the freeway, at a truck stop or in your yard. Se habla español.
We find the problem
A mobile mechanic comes to you, or you bring the truck to our shop on Pioneer St. You get the price before we start.
Back on the road
We make the repair, test it and get you rolling — with quality parts and a warranty on our work.
Semi Truck & Trailer Repair Shop in South Phoenix
Family-owned and operated since 1999, Emergency Roadside Truck & Trailer Repair brings over 25 years of experience to the commercial vehicle repair industry. From our shop at 315 E Pioneer St we provide semi truck repair, trailer repair and diesel engine repair, and our mobile truck repair units bring the shop to you anywhere in the Phoenix metro. Our mobile units feature the latest diagnostic equipment and are staffed by certified diesel mechanics who specialize in heavy-duty vehicle maintenance and repair.
At Emergency Roadside Truck, integrity is our cornerstone — we prioritize trust over profit, ensuring every job is done with the utmost precision and honesty. Choose us for dependable, expert care of your truck, where we stand by our work with courage and commitment. We use quality replacement parts, back our work with a warranty, and hundreds of drivers, owner-operators and fleets have shared their experience in more than 600 Google reviews.
About Us
Manufacturers We Specialize In
Proudly Serving the Phoenix Metro Area
Based in Phoenix, our mobile units reach every corner of the metro — from Glendale to Gilbert. If your truck is down, we'll be there.
Truck Repair Reviews From Phoenix Drivers
Real reviews from our customers on Google. Read more reviews or leave us one!
Very fast service. Genesis and Eli were very kind and helpful. Awesome customer service!
Mike and Luis fixed my freightliner on a Saturday when the other shops were closed. Got me in and out same day. They have the Def pumps in stock
These guys did a great job for me, I had a truck at Rush truck to repair a tensioner pully on a C15 cat and 2 drive belts. Rush quoted me 1600 for the repair plus parts and 2 days time. I limped it to Emergency Roadside Truck and Trailer Repair — done in 2 hours and 400 dollar bill. THANK YOU
Awesome service. Called for roadside assistance, driver was routed ASAP to the rescue. Everyone was polite, professional and genuinely felt they had a sense of urgency in our time of need. Would highly recommend Emergency Roadside Truck and Trailer Repair. Thank you guys very much!
We drove to their shop with our RV and they got us in immediately. They did diagnostics and determined that #5 injector was bad. They were able to locate an injector, installed it same day and we were back on the road within hours. They were very personable and Eli did an awesome job of keeping us informed every step of the way. Thank you again! We highly recommend this shop!!
This fixed my acm for volvo no communication. They fixed within two hours. They are faster than Volvo dealer. Dealer told me long wait time. Eli took care of me
Excellent service. Recommended me to go to an official carrier dealership because it would be under warranty. High level of ethics!
Called around, nobody could replace my radiator same day. Emergency Roadside got it done in a couple hours with fair price, 10/10 trust them with your trucks 👍
Why Phoenix Truckers Choose Us
- 🏆 Certified Diesel Mechanics
- 👨👩👧 Family-Owned & Operated
- ⭐ 600+ Google Reviews
- ✅ Quality Parts & Warranty
Visit Our Shop on Pioneer St
315 E Pioneer St, Phoenix, AZ 85040Mon – Fri: 7:00 AM – 6:00 PM · Sat: 7:00 AM – 2:00 PM
- Comfortable waiting roomCoffee, free Wi-Fi, snacks and movies while we work on your truck.
- 24-hour key dropDrop your truck after hours; we start on it when we open.
- Easy freeway accessMinutes from I-17 and I-10 in South Phoenix.
- Weekday hoursMon–Fri 7 AM–6 PM · Sat 7 AM–2 PM.
- Latest diagnostic equipmentWe find the real cause before replacing parts.
- Price before we startWe explain the repair and the cost first — no surprises.
- Shop or mobile — your choiceCan't bring it in? Our mobile units come to you.
- Fleet discountsDiscounted pricing for fleet accounts. Fleet service →
Truck Repair FAQs — Phoenix, AZ
Answers to the questions we hear most from drivers and fleet managers across the Phoenix metro.
We dispatch immediately and aim to reach you as quickly as possible anywhere in the Phoenix metro. Response times vary with traffic and technician availability.
No. We are 100% mobile — our fully equipped units come to your breakdown, fleet yard, or job site, saving you expensive towing fees.
We service all major makes including Peterbilt, Kenworth, Freightliner, Mack, Volvo, International, and Western Star.
Monday through Friday, 7:00 AM to 6:00 PM, and Saturday, 7:00 AM to 2:00 PM. Closed Sunday. For emergencies, call us — we prioritize breakdowns.
Our units carry the most common parts. For specialized components, we source them quickly from local suppliers to minimize your downtime.
Yes. We provide scheduled preventive maintenance tailored to your entire fleet, helping you reduce breakdowns and lower operating costs.
Truck Down? Don't Wait — Call Now.
Every minute of downtime costs you money. Our mobile mechanics are standing by to get you back on the road — fast, anywhere in the Phoenix metro area.