Minimal Downtime
the Road
You Can Trust
On-Highway Service
Warranty‑safe repair and maintenance for heavy‑duty trucks and trailers—24/7, in‑shop or onsite.
Allison Transmission Service (Authorized)
Certified Allison specialists provide complete diagnostics, rebuilds, and repairs for all series transmissions.
Preventive Maintenance & DOT Inspections
Comprehensive PM programs and annual DOT inspections designed to reduce downtime and keep fleets road-ready.
OEM and Quality Aftermarket Parts
We stock genuine OEM and vetted aftermarket parts, including filters, sensors, rebuild kits, and more—for exact fit, performance, and fast turnaround.
Cummins Engine Service & Repair
We provide diagnostics and repair for Cummins engines, including troubleshooting, fuel and emission system service, and performance restoration for most models.
Detroit Diesel Engine Service
Factory-trained Detroit Diesel experts provide diagnostics, rebuilds, and maintenance for DD series engines, ensuring OEM-level performance and reliability.
Mobile Field Service & Roadside Assistance
Our mobile technicians provide on-site diagnostics, emergency repairs, and towing coordination.
Warranty & Authorized Service
As an authorized service center, we handle warranty repairs for Allison Transmission, Detroit Diesel, and other OEMs.
Clutch & Drivetrain Repair
From clutch replacements to driveline balancing, we deliver full drivetrain maintenance for medium- and heavy-duty trucks.
We Service All Makes and Models
Box Trucks | Delivery Trucks
Sweepers | Municipal Trucks
18 Wheelers
School Buses | Beverage Trucks
Coaches | City Buses
FAQs
Do Factory‑Certified Technicians protect my warranty?
Yes. We follow OEM procedures and use genuine parts, with documentation for claim approval.
What diesel repair services does Stewart & Stevenson offer?
We provide diagnostics, engine repair, transmission repair, electrical repair, hydraulic system repair, preventative maintenance, and complete support for Class 4–8 commercial vehicles and heavy-duty diesel equipment.
Do you offer OEM diesel engine parts?
Yes. We supply genuine OEM parts for Detroit Diesel, Allison Transmission, DEUTZ, mtu, and other leading manufacturers.
Are your technicians certified for major OEM brands?
Yes. Our technicians receive factory training and certification for Detroit Diesel engines, Allison transmissions, DEUTZ engines, Volvo Penta systems, and mtu applications.
Do you offer fleet maintenance services?
Yes. Stewart & Stevenson provides scheduled maintenance and repair programs tailored for trucking companies, municipal fleets, logistics operators, and heavy-duty equipment users.
Do you offer 24/7 emergency service?
Yes—field and in‑shop support in supported regions.
Which brands do you service?
Stewart & Stevenson services vehicles from all major makes and models.
Why Stewart & Stevenson
Customer service is always great with Adrian and Lalo up front.
New popcorn machine in parts pick up is a great addition too.
They guided me where to go to get what I needed. Thank you.
Excellent quick service
The guys at the counter are the best!!! Needed some filters and they helped me locate them, even though they didn’t have them. Best customer service hands down!!!
As always, when I have to go to this facility, I get top notch service and they treat their customers with respect. I know they’re gonna do a good job on my truck and that’s why they get my business.
Completely professional, thorough, and knowledgeable about their work, would recommend anyone to get services here.
AMAZING Techs and service. Had mistakenly gone to freightliner first for a busted radiator to find out after 36hrs there’d be another 5-6 day wait. Called Mathew Richardson here he got me in same day and radiator repaired that day even staying late to do it. He went far above and beyond not only in the exceptional service and repair time but even found out my repairs were still under warranty when Freightliner tried saying they weren’t. If you need repairs in the Houston area this is definitely the place you should try first and if you do I’m sure it’ll be the last place you need to ask for repairs.
