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Monday 8am - 5pm Tuesday 8am - 5pm Wednesday 8am - 5pm Thursday 8am - 5pm Friday 8am - 5pm

Tri-County Diesel Service

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United States
San Antonio, TX
Tri-County Diesel Service

Tri-County Diesel Service offers incomparable and complete truck repair and maintenance services.

06/17/2026

An engine starved of air wastes fuel. A clean air filter ensures your semi truck runs smoother and saves on fuel costs. Book with our truck technicians at Tri-County Diesel Svc in San Antonio to keep your rig efficient by calling and speaking with a team member ASAP about appointments! https://tricountydieselservice.com

06/15/2026

Fleet managers know downtime is expensive. That’s why Tri-County Diesel Svc offers reliable semi-truck exhaust repairs to keep every vehicle in your lineup operating at peak performance. Schedule service today at https://tricountydieselservice.com.

06/10/2026

A well-functioning transmission supports reliable hauling and smooth operation. If something feels off, let Tri-County Diesel Svc check your semi truck's transmission. Schedule your inspection at https://tricountydieselservice.com.

06/08/2026

Dim lights, slow starts, or frequent jumps are all warning signs your semi truck battery needs attention. At Tri-County Diesel Svc, we’ll diagnose the problem and get you back on the road with confidence. Schedule your truck's appointment today at https://tricountydieselservice.com.

06/01/2026

Has it been a while since you had the cabin air filters replaced in your semi? Cabin air filters at Tri-County Diesel Svc minimize airborne contaminants in the passenger compartment and improve heating/cooling efficiency. If you require new cabin air filters, our shop can service your trucks today. Visit us on our website, https://tricountydieselservice.com, or give us a call to schedule appointments!

05/27/2026

From engine oil to coolant, every fluid in your semi-truck plays an important role. At Tri-County Diesel Svc in San Antonio, we provide thorough fluid inspections and services. Learn more at https://tricountydieselservice.com.

05/25/2026

Keep your semi running efficiently with proper exhaust system care. At Tri-County Diesel Svc in San Antonio, we repair and maintain exhaust systems to prevent costly breakdowns. Book your service today at https://tricountydieselservice.com.

05/20/2026

Damaged brake rotors in semi trucks can cause vibration or squealing. Worn rotors lower braking performance. Replacing rotors improves stopping power. Schedule rotor service with Tri-County Diesel Svc by visiting https://tricountydieselservice.com.

05/18/2026

Do you notice a strange odor when you turn on your vehicle’s air conditioner? This could be a sign of an issue with the A/C system. Bring your semi-truck to Tri-County Diesel Svc for a full inspection. Call us today to schedule an appointment, or visit https://tricountydieselservice.com for more details.

05/13/2026

Your fuel filter protects your engine from contaminants that reduce efficiency and cause damage. Replacing it regularly at Tri-County Diesel Svc keeps your semi-truck running strong. Book a fuel filter replacement with us by scheduling service on our website. https://tricountydieselservice.com

Address

18515 Wilhelm
San Antonio, TX
78266

Opening Hours

Monday	8am - 5pm
Tuesday	8am - 5pm
Wednesday	8am - 5pm
Thursday	8am - 5pm
Friday	8am - 5pm

Website

http://www.tricountydieselservice.com/

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