(210) 651-5708 18515 Wilhelm | San Antonio | TX 78266 Mon-Fri: 8AM - 5PM About Services Specials Reviews Contact REQUEST APPOINTMENT When you drive a truck, downtime is money. At Tri-County Diesel Service, we work to save you both. Trust Your Truck to Tri-County Diesel in San Antonio At Tri-County Diesel Service, we offer San Antonio truck drivers and owner-operators complete truck repair and maintenance services, including PM schedules, air brake repair, trailer suspension repair, and more! We’ve been serving the Canyon Lake area for over two decades, building strong relationships with our clients, so we know not only their trucks but their jobs, goals, and families as well. If you drive in San Antonio, we want to be the shop you trust with your truck and your livelihood–a fact we take to heart at Tri-County Diesel Service . Our Mission at Tri-County Diesel Service We know time is money for your over-the-road trucks. At Tri-County Diesel Service, we pride ourselves on quality work done in a reasonable amount of time. Each of our customer’s needs are met as quickly as possible, while never sacrificing accuracy or safety. Minimize Truck Downtime with Personally Tailored Service Because our focus is trucks, we understand the needs of truck drivers and owner-operators. Primarily, you need your truck on the road, running and working for you. We’ll help you determine the best time to take your truck out of service for maintenance so your production won’t suffer. If a repair needs to be taken care of immediately, we’ll get it done ASAP. Our goal is to minimize your truck downtime and keep you on the road. Get Your Truck Fixed Faster than with the Dealerships Our experienced diesel mechanics work on Kenworth, International, Peterbilt, Mack, Western Star, Volvo, Ford, Freightliner, and all other big truck brands. Often we get jobs done in the same day, and because we primarily serve truck owner-operators, you won’t have to wait to bring your truck in for service like with dealerships and larger shops. Call Tri-County Diesel Service when they tell you it’ll be a week, and next time you’ll simply call us first. Proudly Serving Truck Drivers in San Antonio & Canyon Lake Our shop is conveniently located at 18515 Wilhelm in northeast San Antonio, close to IH35 and Loop 1604 in the Canyon Lake area, which means easy access from either direction, and we’re only minutes from Schertz, Selma, and New Braunfels. If you’re delivering to the Amazon warehouse in Schertz, we’re only four miles away should your truck need maintenance or repairs while you’re on the job. Call Tri-County Diesel Service Today! If you own or operate a truck in the San Antonio area, Tri-County Diesel Service can accommodate all your repair and service needs! Give us a call or schedule an appointment online today! Trucks We Repair & Service Kenworth Mack Sterling International Peterbilt Freightliner Truck Trailers & More Home | About Us | Services | Reviews | Truck Care Tips | Contact Us Tri-County Diesel Service — Truck Repair & Service in San Antonio, TX Serving San Antonio, TX and surrounding areas, including Schertz, Selma, and New Braunfels. 18515 Wilhelm • San Antonio • TX 78266 • (210) 651-5708 • Privacy Policy• Accessibility Statement © Drive. All rights reserved.