Hearing whining or grinding while turning? H&H Diesel Service in Seguin, TX specializes in differential repair for heavy-duty trucks. We restore smooth power delivery and protect your drivetrain from failure.

Heavy-Duty Differential Repair in Seguin, TX
Your truck’s differential splits torque between wheels and keeps your rig stable on turns. When it fails, you’ll feel it—through vibration, noise, and handling issues. At H&H Diesel Service, we provide differential repair and replacement services that keep your drivetrain strong, quiet, and reliable.
We service all types of differentials, including:
- Single and tandem axle differentials
- Open, limited-slip, and locking differentials
- Gear and bearing replacements
- Differential fluid flush and refill
- Pinion and carrier bearing replacement
- Ring and pinion gear setup
- Leak repair and seal replacement
- Noise, vibration, and overheating diagnostics
Whether you need a full rebuild or just a fluid service, our certified team has the experience to get it done right.
Experience the H&H Difference
Certified Driveline Experts: Our team understands the inner workings of every differential—from standard linehaul axles to off-road locking setups.
Quick Turnarounds, No Shortcuts: With 6 bays and 8 diesel techs, we get differentials diagnosed and rebuilt quickly—no weeks-long wait times.
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.
Upfront, Honest Communication: No vague answers or surprise charges—just straightforward advice and repairs that fix the problem the first time.
Warrantied Repairs You Can Trust: We stand behind every job with a 30-day workmanship warranty and honor all OEM parts warranties.
Contact Us About Differential Repair Now: Call 210-332-5821!
If your truck is whining, shaking, or leaking near the axle, call H&H Diesel Service at 210-332-5821. We’ll inspect and repair your semi truck differential fast—so you can drive with confidence again.
FAQs
What Areas Do You Serve For Heavy-Duty Differential 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.
What Are the Signs of Differential Failure?
Common symptoms include whining or grinding noises, vibrations when turning or accelerating, and leaking fluid around the axle seals. Ignoring these signs can lead to full gear failure.
Can You Rebuild a Truck Differential?
Yes. We offer full differential rebuilds, including gear, bearing, and seal replacement. Proper setup is critical, and our certified techs ensure precise fitment and gear lash.
How Can I Get Heavy-Duty Differential Repair?
Call 210-332-5821 today to schedule an inspection or service. H&H Diesel Service offers expert diagnostics and repairs for all differential types—built to keep your drivetrain solid.
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.
Testimonials
Here's What our customers are saying, feel free to leave us a review!
Jack Stoner