About Us at H&H Diesel Services
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Our Story
After nearly two decades working as a diesel mechanic in dealership shops, owner Michael Heaps had seen enough. Slow turnaround, red tape, and customers left in the dark. So, he decided to do it differently. Starting with one service truck and a phone full of loyal customers, Michael launched H&H Diesel Service to offer no-BS diesel repair, done fast and done right. Today, we run 7 fully equipped service trucks and a brand-new facility that reflects our growth, values, and commitment to doing the job right the first time.
Professionally Certified
We’re not limited to one brand or one type of diesel work. We fix it all. H&H Diesel Service is a Kubota Authorized Repair Facility, a proud NAPA Truck Care Center, and fully certified to work on Terex, National Crane, and PACCAR systems. Our shop handles all major manufacturers, including Cummins, Caterpillar, and John Deere. Whether it’s a long-haul semi, a service truck, or off-highway construction equipment, we’ve got the tools and training to get it back to work fast.
Warranty-Backed Repairs
We don’t cut corners. Every job at H&H Diesel Service comes with a 30-day workmanship warranty, plus full coverage on all manufacturer-backed parts warranties. We believe in standing behind our work and communicating clearly from start to finish. No surprises, no upsells. Just diesel repairs you can count on, from a team that puts your uptime first.
Our Services
We handle everything from diagnostics and maintenance to complete rebuilds. Whether you're stopping by the shop or broken down roadside, we’ve got you covered. H&H Diesel Service offers mobile repairs and roadside assistance within a 25-mile radius of Seguin.
Call us when you need help fast—on your schedule, at your location.
Testimonials
Here's What our customers are saying, feel free to leave us a review!
Jack Stoner





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