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Your diesel truck’s exhaust system keeps you compliant, quiet, and running clean. At H&H Diesel Service in Seguin, TX, we repair and maintain full exhaust systems—fast, precise, and emissions-safe.
Heavy-Duty Exhaust Repair in Seguin, TX
Loud exhaust? Power loss? Failing emissions test? Your truck’s exhaust system plays a critical role in performance, fuel efficiency, and compliance. At H&H Diesel Service, we offer expert diagnostics and heavy-duty exhaust repair to keep your truck running smooth—and legal.
Our diesel exhaust system services include:
- Exhaust leak diagnostics and repair
- DPF cleaning and replacement
- DOC and SCR system service
- EGR valve and cooler replacement
- Exhaust manifold repair
- Muffler and tailpipe replacement
- Full aftertreatment system repair
- DEF system troubleshooting and repairs
If you're noticing increased noise, smoke, reduced fuel economy, or warning lights, it may be time to inspect your emissions and exhaust systems. Our certified team will pinpoint the problem and restore performance the right way.
Experience the H&H Difference
Certified in Aftertreatment Systems: From EGRs to SCRs, our technicians are certified in all major diesel emissions systems and know how to service them correctly without guesswork.
Quick Turnarounds, Zero Compromise: With 6 bays and 8 experienced techs, your truck doesn’t wait weeks for repair. We turn jobs around fast—whether you’re running a fleet or one rig.
Mobile Repairs: Can’t make it to the shop? We offer dependable roadside assistance and scheduled mobile repairs to a 25-mile radius of Seguin, TX.
Straight Talk, No Surprises: We provide honest diagnostics, clear communication, and only recommend what your truck actually needs—no unnecessary upsells.
Warranty-Backed Work: Every repair comes with a 30-day workmanship warranty, and we fully honor all OEM part warranties. You’re covered long after you leave.
Contact Us About Exhaust Repair Now: Call 210-332-5821!
If your truck’s exhaust is underperforming or throwing codes, don’t wait. Call H&H Diesel Service today at 210-332-5821 for semi truck exhaust repair that’s emissions-compliant, dependable, and done right the first time.
FAQs
What Areas Do You Serve For Heavy-Duty Exhaust Repair?
We’re located at 7310 I-H 10 West, Seguin, TX 78155, near the I-10 intersection. We also proudly serve San Antonio, TX; Lockhart, TX; Luling, TX; New Braunfels, TX; San Marcos, TX; Cibolo, TX; Schertz, TX; Marion, TX; McQueeney, TX; Geronimo, TX; New Berlin, TX; Santa Clara, TX; and Lake Dunlap, TX.
Is It OK to Drive With an Exhaust Leak?
Driving with an exhaust leak is risky. It can lead to engine performance issues, increased emissions, and carbon monoxide entering the cab. It's best to have it inspected and repaired immediately.
Will an Exhaust Leak Cause a Check Engine Light?
Yes, an exhaust leak—especially near the manifold or sensors—can cause a check engine light. Leaks can affect O2 sensor readings and disrupt engine performance.
How Can I Get Heavy-Duty Exhaust Repair?
Call 210-332-5821 today to schedule your exhaust system service with H&H Diesel Service. We’ll inspect, diagnose, and fix your system to keep your truck quiet, clean, and road-legal.
Diesel Repairs That Last
We service a wide range of diesel-powered vehicles and equipment—including heavy-duty trucks, medium-duty box trucks, buses, RVs, heavy equipment, and commercial fleets. Whether it’s a Class 8 semi-truck or a bulldozer, we’ve got the tools and expertise to get it done. Our team knows diesel systems inside and out and delivers quality repairs that last.
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Testimonials
Here's What our customers are saying, feel free to leave us a review!
Jack Stoner
