Diesel Repair in Seguin, TX

Our Repairs

At H&H Diesel Service, we specialize in diesel repairs that keep your trucks and equipment moving. Whether it’s your engine, brakes, transmission, or suspension, our certified team diagnoses and fixes the problem fast—no guesswork, no unnecessary delays.

FAQs

What Types of Vehicles Do You Repair?

We work on diesel-powered trucks, trailers, buses, RVs, and heavy equipment. Whether you run a single rig or a full fleet, we provide reliable, full-service repairs tailored to your needs.

Do You Perform Engine Repairs and Rebuilds?

Yes. We repair diesel engines, perform in-frame and out-of-frame rebuilds, and replace worn components to restore power and reliability.

What Suspension Services Do You Offer?

We repair air and spring suspensions, replace shocks, fix hangers, and align axles to improve ride quality and reduce tire wear.

Can You Fix Fuel Injectors and Fuel Systems?

Absolutely. We clean, replace, and test diesel injectors and diagnose full fuel system issues to improve performance and fuel efficiency.

Do You Provide Brake System Repairs?

Yes. We handle air brake diagnostics, chamber replacements, line repairs, and full system overhauls to keep your truck DOT compliant.

What Kind of Transmission Repairs Do You Perform?

We repair, rebuild, and replace both manual and automatic transmissions, including clutch and flywheel service for heavy-duty applications.

Do You Offer Hydraulic System Repairs?

Yes. We repair hydraulic hoses, cylinders, pumps, and valves to restore system pressure and function in heavy equipment and service trucks.

Can You Fix Aftertreatment and Exhaust Issues?

We handle exhaust leaks, replace DPF and DEF components, and diagnose emission system codes to restore compliance and performance.

Contact Us Today

Need repairs you can trust? Call H&H Diesel Service at 210-332-5821 today. From minor fixes to major overhauls, we keep your diesel truck or equipment running strong and safe.