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Truck Source Diesel
“Took it the Truck Source Diesel by recommendation from a friend and when I arrived they said it would probably be around 24 to 48 hours before they can look at it.”
Best Truck Repair near San Marcos, TX
We have 4 mechanics in San Marcos on file; 1 of them is on this list, along with 23 from San Antonio (45 mi).
7 open weekends · 21 rated 4.5+ · 1 shows a license
Data verified October 16, 2026
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Santin Auto and Truck Repair Center
“Want to thank these guys for going up over and beyond showing up when I needed them the most day or night they're there for all trucking repairs and more thanks again”
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Ezzell Fleet Service
“This is a great family run business and I feel bad for them when I come in...”
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USA Motors San Antonio Inc
“The only thing I question is that the 2 repair experiences I had - someone went rummaging through everything in the car - trunk included - private paperwork & all.”
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Larson's Automotive
“They have gone above and beyond to communicate with me and accommodate me (and that probably hasn't always been easy 😄 although, everyone has been consistently gracious).”
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RTS Tire Service
“They were nice and friendly when I went and I didn't have to wait long for them to change my tire, and the guy even turned my air on for me so it would be cool in my car for me.”
Listed for drivers in and around San Marcos, TX, these 24 shops work on medium and heavy duty trucks. What each one says about fleet accounts, road service, inspections and hours comes from its own website; ratings and quotes come from public reviews.
Area overview: San Marcos, TX
The 24 mechanics on this page are rated from 3.8 to 5.0 across 1,940 reviews; 12 have 50 or more reviews and 21 are rated 4.5 or higher. When customers rate these mechanics on specific qualities, they most often praise professionalism (97%), quality (97%) and value (90%). 7 are open on Saturdays and 1 on Sundays. 1 shows a license on its website; 2 list staff certifications (ASE and EVT) and 4 have a BBB rating of A or A+. Domain records put 8 websites of the mechanics on this page at ten or more years old; the oldest dates from 2005. 1 offers financing; 2 give free estimates; 3 are family- or locally-owned and 5 list coupons or special offers. We have a website on file for 17 of the mechanics on this page; 14 publish a contact page; 7 list a public email and 4 take bookings online. We count these figures across the mechanics on this page; distances are straight-line, and hours and prices change, so confirm the details with the mechanic before you visit.
Which truck shops listed for San Marcos work on Saturdays or Sundays?
7 of the 24 shops on this page run a weekend shift. Weekend slots are how a lot of fleets get preventive maintenance done without losing a working day, so they book out early. Parts counters keep shorter hours, which is the usual reason a Saturday job waits until Monday.
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Dynamic Diesel Service
- Stars
- Owner
- Truck Driver
“Great guys, extremely helpful, Owner and Darren are really helpful, will listen to you and try to give you advice on what your truck needs to be 100 percent,”
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Weber Autowerks
“From the very first touch through to job completion the communication, professionalism and simply having empathy fory situation was appreciated and rare for this industry.”
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Automotive Brake & Clutch
- Prices
“Great people better prices and awesome service!!!!”
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Texas Diesel Injection
“They didn't have me spending money on things that weren't needed just to make an extra buck so I appreciated the honesty and transparency of the guys there from the start.”
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Bull-One Diesel L.l.c.
- Prices
- Inspection
“The owner Bull is a great guy talked to him on the phone and I told him I was coming and he was very welcoming and knowledgeable, unlike other diesel shops nowadays”
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OTR Fleet Service
“Really nice ppl the mechanic got me in fast handle wat i asked him to came to me before tryna fix anything else the ladys in the front were very professional and sweet to hold a convo with they didnt jus steer at me over there cubes thanks otr oh and...”
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Rams Frame & Body Shop
- Dealership
- Quality
- Vehicle
“After my car suffered extensive frame damage, I called several body shops around San Antonio and even New Braunfels and no one said they could help me with the damage sustained”
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Ellison's Discount Auto Repair
“I got my car tune up with them about a month ago and they were so nice and their prices were really good and they were attentive and they gave it to me in a timely manner.”
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Tri-County Diesel Services
- Room
- Cost
“Furthermore, just a few hundred feet from them is a fantastic spot to grab some BBQ chicken or Short Ribs (Always helps when you're down for the day waiting to be get rolling)”
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Sergeant Clutch Certified Engine & Transmission Repair Shop
“Super good customer service i've been here a couple times now and they always do right by my car, they have an awesome waiting room with the sweetest cat”
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Amzr Repair LLC
- Trailer
- Oil
- Mechanics
“Their team of skilled technicians demonstrated unparalleled proficiency in diagnosing and rectifying issues, ensuring that my truck received the attention it deserved.”
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Alonzo's Trailer
- Prices
- Tires
“Very friendly and fast from the office lady to the dispensers”
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H&H Truck Shop Inc.
- Price
“First time at shop and treated like I'd been going there for years..”
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Tamez Truck Service Inc
- Knowledge
- Prices
- Honest
“Honest people good price good work”
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BH Auto Care
“I took my 2007 GMC Yukon in for an oil leak and they explained what needed to be done and how much it would cost.”
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Carus Auto Repair
- Vehicle
- Diagnosis
- Future
“After being told a different diagnostic from another repair shop that was going to cost me a lot more than what I paid for, I was recommended to Horus.”
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Galaxy Truck Inc
“Always had my rig and personal trucks work on and allways very Happy with all work done allways returning back in the future five star service thanks for all”
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Mauro's Automotive & Diesel
- Prices
“Very fair pricing”
Heavy Duty Truck Repair Services in San Marcos, TX Cost Estimates
Minimum cost
$316
Maximum cost
$3804
National Average
$480
Avg Per Hour Rates
$120
$359
$710
Typical price range is based on 336 cost profiles
Why these companies made our list
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