What are the opening hours?

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.

06/01/2026

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

05/11/2026

AC systems work hard in heavy-duty trucks. That’s why our experienced truck technicians at Tri-County Diesel Svc specialize in semi-truck AC service that lasts. Let us keep your truck's cab at the perfect temperature.

05/06/2026

Your semi truck depends on a strong, balanced brake system every day. Tri-County Diesel Svc in San Antonio provides thorough brake repair and inspection services. Learn more at https://tricountydieselservice.com.

04/29/2026

Overheating can cause serious engine stress in semi trucks if left unaddressed. A thorough cooling system evaluation helps identify weak points early. Staying ahead of issues supports long term performance. Visit https://tricountydieselservice.com or contact Tri-County Diesel Svc to schedule service.

04/27/2026

Your semi truck check engine light can signal anything from ignition trouble to turbocharger issues. If your truck feels weaker or sounds different, the problem won’t fix itself. Let Tri-County Diesel Svc in San Antonio handle the diagnostics. Schedule your appointment today through 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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