Smitty & Sons Repair

Heavy-Duty Diesel Mechanic Services in Lewiston, ID & Surrounding Areas

Smitty  & Sons Repair offers comprehensive diesel mechanic support for trucks, trailers, commercial fleets, and heavy equipment— in-shop in Lewiston, Idaho and via mobile service units to the surrounding areas. From DOT inspections to preventive maintenance, we perform a wide range of diesel repair and maintenance services. Contact us today for more information, to request an estimate, and to schedule service.
Mechanic working on an engine

Trusted Mobile & In-Shop Diesel Mechanics in Lewiston, ID

At Smitty & Sons Repair, we deliver a full spectrum of diesel mechanic services designed to keep your vehicles compliant, reliable, and road-ready. As we started our offering mobile-only truck repair, we know that bringing everything to your location saves you the cost and downtime of towing.

We offer certified DOT inspections in Lewiston, ID, ensuring your fleet meets FMCSA standards and safety regulations. Our general diesel repair services cover everything from fluid leaks to fuel systems, helping you avoid major breakdowns. We also provide preventive maintenance tailored to your operation, including filter changes, lubrication, and full inspections to catch issues before they escalate.

For fleets or owner-operators dealing with roadside issues, our mobile truck repair in Lewiston, ID and 24/7 roadside assistance means we can respond fast and fix problems on-site—whether it’s a blown hose, failed sensor, or locked-up brakes.

Our trusted diesel mechanics also specialize in diesel repair, tackling electrical systems, plumbing, and diesel engine issues that keep your motorhome in motion. Our heavy equipment repair services extend to excavators, loaders, and machinery used in construction, agriculture, and forestry.

If you're looking to enhance performance, safety, or functionality, we offer specific truck modifications in Lewiston, ID, including lighting upgrades, DEF relocation, auxiliary tank installation, and more. We also handle trailer repair, from electrical and axle work to suspension and brakes, to keep your trailer road-legal and efficient.

For parts replacement, we supply and install quality truck parts in Lewiston, ID, backed by industry-trusted suppliers. And when it comes to structural fixes, our welding and fabrication services include everything from frame repair to custom metalwork—right at your site.

Contact Smitty & Sons Repair Today For Diesel Mechanic Services

Whether you're running a fleet or managing a single unit, our diesel mechanic services in Lewiston, ID are built for your business. From DOT compliance to fabrication work, Smitty & Sons Repair is your go-to partner for dependable, on-location and in-shop services. Call 208-791-0677 to book your next service visit or to speak with a technician.

FAQs

What Is Included in a General Truck Service?

A general truck service includes inspections, fluid and filter changes, lubrication, brake checks, tire inspections, battery testing, and other routine maintenance. Regular service helps improve reliability and reduce the risk of unexpected breakdowns.

How Often Should My Truck Be Serviced?

Service intervals depend on your truck, engine, mileage, and operating conditions. Following the manufacturer's maintenance schedule and addressing issues early helps extend component life and keeps your truck performing safely.

Why Is Routine Truck Maintenance Important?

Routine maintenance helps identify worn or failing components before they lead to costly repairs. It also improves reliability, supports fuel efficiency, reduces downtime, and helps keep your truck operating safely.

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Services

Our Heavy-Duty Diesel Mechanic Services

At Smitty & Sons Repair, we offer a full lineup of diesel mechanic services designed to keep your vehicles and equipment running strong. We perform DOT inspections to ensure your rig meets all federal safety regulations. Our general diesel repair covers everything from leaks to sensor issues, while our fleet services are tailored to help businesses stay compliant and on schedule. We provide service in shop in Lewiston &  mobile truck repair  with fast response times to the surrounding areas.

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REVIEWS

Testimonials

Here's what our customers are saying. And feel free to leave us a review of your own!

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Kyle Neal

"I cant say enough about the excellent service and repair I received from Smitty and Sons and Weston to be exact. Constant communication, updates, timely, and cost effective repair of my tractor. My tractor wouldn't run so they fixed it at my house. I highly recommend them. Excellent Service"
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"Can’t speak more highly of Wes (the owner) of Smitty & Sons, he was amazing! We had a complex issue with our RV while travelling through Lewiston. Wes arrived promptly, fitted us into his busy schedule, communicated well and followed up. He proved knowledgeable and capable and went above and beyond what we could have expected. Everything done with a smile and a caring heart! Thank you so much for your outstanding service Wes, it was truely appreciated! Highly recommend! - Lindy & Mark"
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Very efficient and professional little family oriented shop, Wes was awesome knowledgeable and actually he do he very best to get you on road ASAP, he’ll go out of his way to help! He did a great job on my 2015 Peterbilt, THANK YOU ALL SMITTY & SONS
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Excellent service! Came right to me within an hour, fixed the issue and saved me a fortune!!
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