Commercial Truck Diesel Repair in San Antonio, TX
Call Today for Mobile Diesel Repair
When your commercial truck breaks down, every minute counts. Lone Star Diesel Solutions provides fast, professional mobile diesel repair in San Antonio, TX and within a 150-mile service area. Whether you’re an owner-operator hauling freight or managing a fleet of trucks, our certified diesel mechanics come to you — roadside, jobsite, or yard — to get your rig back on the road.
Downtime isn’t just inconvenient — it’s expensive. Every hour your rig sits idle means missed loads, delayed deliveries, and lost revenue. That’s why Lone Star Diesel Solutions offers mobile commercial truck diesel repair in San Antonio, TX and across a 150-mile service area. Our experienced mechanics come to you, whether you’re stranded on I-35 near New Braunfels, sitting at a loading dock in San Antonio, or hauling oilfield equipment down I-37 toward Corpus Christi.
Our mission is simple: keep your truck running so your business keeps moving.
Mobile Repair for Owner-Operators & Trucking Companies
Commercial truck drivers face unique challenges on Texas roads. Long hauls, heavy loads, and extreme heat can push diesel engines to the limit. Instead of waiting for a tow or losing half a day at a dealership, our mobile diesel mechanics bring the shop to you.
We service:
18-wheelers & tractor-trailers
Box trucks & delivery vehicles
Day cabs & long-haul trucks
Reefers (refrigerated trucks)
Heavy-duty pickups & support trucks
Whether you’re an owner-operator running solo or managing a fleet of 50 trucks, we provide fast, professional, and cost-effective diesel repair.
Roadside Service When Breakdowns Happen
Highway breakdowns can stop deliveries, cost contracts, and risk safety. We provide 24/7 roadside truck repair along major routes including:
I-10 (toward Houston & El Paso)
I-35 (toward Austin, Dallas & Laredo)
I-37 (toward Corpus Christi & Eagle Ford Shale)
Loop 410 & Hwy 281
No tow trucks needed — we bring the shop to you.
Common Diesel Truck Repairs We Handle
Commercial trucks endure punishing conditions — but we’ve seen it all. Our diesel mechanics handle:
Engine diagnostics & repair (Cummins, Detroit, CAT, PACCAR & more)
Fuel system repair & priming issues
Electrical system troubleshooting & wiring repairs
Radiator & cooling system service (critical in Texas heat)
Brake & suspension repair
Transmission, clutch & driveline service
Aftertreatment & DEF system troubleshooting
Battery replacement & alternator service
We bring the right tools, diagnostic equipment, and replacement parts to your location, reducing downtime and saving you towing expenses.
At Lone Star Diesel Solutions, our commercial truck diesel repair services keep your fleet on the road and earning. From Freightliner, Peterbilt, and Kenworth to International, Volvo, and Mack, we provide expert diagnostics, roadside repair, and preventive maintenance for every major brand. Our San Antonio, TX–based team services box trucks, dump trucks, and long-haul rigs across a 150-mile radius, keeping drivers moving day and night. Explore our individual brand pages—including Freightliner, Peterbilt, Kenworth, and International diesel repair—or visit our Oilfield Truck Repair page for heavy-duty support in the toughest environments.
Why Truckers Choose Lone Star Diesel Solutions
With years of hands-on diesel experience, we understand what South Texas truckers need most: reliability, speed, and honesty.
Mobile diesel mechanics with decades of hands-on experience
Faster response times within San Antonio & 150 miles
Affordable repairs that beat dealership downtime
Full DOT compliance support for trucking companies
Trusted by local fleets and independent truckers alike
- Local knowledge of San Antonio and surrounding counties
When you call, you don’t get an answering service — you get a diesel mechanic who knows how to solve problems fast.
The Cost of Downtime
According to industry studies, a downed truck can cost $450–$750 per day in lost revenue, not counting missed contracts or penalties. Our goal is to minimize downtime so you get back on the road as quickly as possible.
Owner-operators often tell us that a repair completed roadside by our mobile team saves them an entire day compared to waiting at a dealership. Fleet managers report lower overall costs when using our preventive maintenance and emergency repair services.
Don’t let a breakdown derail your schedule. Call Lone Star Diesel Solutions at 830-200-9855 for fast, reliable mobile diesel repair in San Antonio, TX and within 150 miles.
Call for Immediate Service
(830)200-9855
Service Area
We proudly serve San Antonio and a 150-mile radius, including:
Bexar County & Greater San Antonio
Atascosa, Wilson & Karnes Counties (rural trucking & farm-to-market routes)
Medina, Frio & Uvalde Counties (oilfield & ranching regions)
Guadalupe, Comal & Hays Counties (distribution hubs & I-35 corridor)
If you’re running freight through South Texas, Lone Star Diesel Solutions has you covered.
Call Today for Mobile Diesel Repair
Don’t lose another load waiting on repairs. Call Lone Star Diesel Solutions at 830-200-9855 for commercial truck diesel repair in San Antonio & across South Texas. Our mobile diesel team is ready 24/7 to keep your truck moving.
FAQ
Do you offer emergency truck repair in San Antonio?
Yes. We know breakdowns don’t follow business hours. Our mobile mechanics are available day and night for roadside assistance and emergency diesel repairs across South Texas.
Can you handle fleet service or just individual trucks?
Both. We service individual owner-operators as well as large fleets. Our fleet clients benefit from preventive maintenance programs that reduce downtime and lower long-term repair costs.
What types of commercial trucks do you repair?
We service all major brands and classes of Class 6–8 commercial trucks, including Freightliner, Kenworth, Peterbilt, Volvo, Mack, International, and more.
How fast can you respond to a breakdown?
Response times depend on location, but in most cases we can be on-site in under 90 minutes within San Antonio and surrounding counties.
What if my truck breaks down outside San Antonio?
Our coverage extends 150 miles from San Antonio, including Eagle Ford Shale, Corpus Christi corridor, and I-35 up as far north as New Braunfels.
What payment methods do you accept?
We accept major credit cards, fleet accounts, Venmo, CashApp, and direct billing for established clients.