Heavy Duty Diesel Mechanic Services in Ronkonkoma, NY

Services

Welcome to K&M Truck Repair—your go-to shop for dependable, professional heavy-duty and medium-duty diesel services in Ronkonkoma, NY. From simple fixes to major system repairs, our team is on hand to bring dealership-level skill and small-shop care to every job.

Experience the K&M Difference!

We offer complete coverage on New York State and federal DOT inspections, helping you stay compliant and avoid costly penalties. Our preventive maintenance programs are designed to catch minor issues before they turn into major problems, and our auto repair services are ideal for keeping your pickup trucks, support vehicles, and work vans road-ready.

And while we’re equipped to handle any diesel issue, we also offer reliable support for liftgate and landing gear maintenance, school bus repair, and inspections. No matter what’s in your yard—we’re ready for it.

You don’t have time to chase problems, and we don’t waste time solving them. At K&M Truck Repair, every diesel repair is treated with urgency, accuracy, and a deep respect for your time and business. Here's what you can expect:

Dealer-Quality Repairs: We use OEM tools, tech, and parts to provide long-lasting repairs you can depend on, without the inflated dealership timelines or pricing.

Relentless Diagnostics: We don’t rely on guesswork. We run full diagnostics, dig into your symptoms, and resolve the issue at its source so it stays fixed.

Outstanding Customer Service: From booking to pickup, expect clear communication, honest advice, and updates that keep you in the loop, not in the dark.

Contact Us for Diesel Services: Call 631-331-0066!

Need professional diesel repair or maintenance? Call 631-331-0066 today to schedule your diesel services in Ronkonkoma, NY. Prefer to text? Send a message to 833-267-3752, and our service team will get back to you in no time.

FAQs

What areas do you serve for diesel services?

We are located at 3045 Veterans Memorial Highway, Ronkonkoma, NY 11779, near I-495, and proudly serve Ronkonkoma, NY; Patchogue, NY; Brentwood, NY; Smithtown, NY; Bay Shore, NY; Holbrook, NY; Medford, NY; Central Islip, NY; Sayville, NY; and Bohemia, NY.

What diesel services do you provide?

Our diesel services include NY State and federal DOT inspections, preventive maintenance, drivability diagnostics, brake and suspension repairs, emissions service, electrical troubleshooting, and auto repairs for diesel-powered vehicles. We also support liftgate, landing gear, and school bus service needs.

Do you offer ongoing maintenance programs?

Yes—our preventive maintenance programs are tailored to your fleet or vehicle needs. We track service intervals, handle routine inspections, and flag problems early to reduce unexpected downtime and repair costs.

How can I get diesel services?

Call 631-331-0066 or text 833-267-3752 to schedule your diesel services with our team at K&M Truck Repair today. Whether you’re prepping for inspection, chasing an issue, or staying ahead of breakdowns, we’ve got the tools and the team to help.

Services

Medium & Heavy Duty Diesel Services

Beyond repairs, we offer complete service solutions for trucks of all sizes. We perform state and federal DOT inspections, preventive maintenance plans, drivability checks, and full system diagnostics. Need help with your DPF/DEF system, turbo, liftgate, or landing gear? We’ve got it covered. Our goal is simple: keep your vehicles compliant, road-ready, and running strong. Whether you're managing a fleet or just one rig, we’ll keep things moving without the downtime.

Reviews

Customer Testimonials

"Was looking for a new shop to work on my truck and these guys were phenomenal. Took me right in, kept me informed throughout the process and expeditiously had me back up and running. Their knowledge and workmanship is incredible. If you're looking for a great shop to bring your truck to, look no further because these are your guys,"
- Daniel

"Thank you Angel, Rich, and the crew for always doing the right thing and being there when needed.  @MorelandHose appreciates dealing with local, family-owned small businesses like yourself."

David

"My truck lights were out and Peter and Ray saved the day. Peter showed me exactly what the issue was and had me going in no time. Real honest service!!!!  I will definitely go back."

3 Brothers Family Moving

"The truck repair shop is a lifesaver for truck owners. They provide swift and skilled service, ensuring your vehicle gets back on the road in no time. A dependable choice for truck maintenance and repairs."

Kenneth

"I Highly recommend this place and people. One of the most friendly and attentive shop I’ve ever work with. Thank you Alvin for your assistance, professionalism and kindness. Thank you Peter for your skills, time, knowledge and honesty fixing my truck. You have a customer for life."

Dariusz

"This place is awesome! They got me in right away and fixed the tires on my kayak trailer. The entire staff was kind and courteous. I would highly recommend!!!"

Karen

"This company is extremely reliable! Hard workers and they go the extra mile for you. I am completely satisfied and in awe of how fast they got to me and to work. 100% recommend."

Jonathan

"Professional, friendly, and knowledgeable.  These people go above and beyond to help you fix the problem.  We had several issues with our truck (electrical, brakes, airleak).  The owner, Peter, checked out the truck and fixed it quickly!  He and his staff are extremely helpful and friendly.   These people treat you right and know their stuff!"

Lady Trucker

"Air compressor went out on my 2007 Peterbilt. Peter showed up within an hour and had me rolling again by noon next day good, honest mechanic is priceless these days I highly recommend."

Stephen

Contact & Location

Billing

Here at K&M TRUCK REPAIR, we know that any product or service that streamlines your fleet repairs saves you time and money, so we now have cbCharge available. It is a simple and free charge account that consolidates your billing through a secure online portal and provides 30-day payment terms with no interest or late fees. Your fleets repairs and maintenance are completed and billed and emailed from K&M TRUCK REPAIR. Then you get one monthly invoice from cbCharge, similar to a credit card bill.

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