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On Highway

Experience the difference over a century of innovation makes

Downtime Stops Here

Getting You Back Up to
Speed in No Time

We understand that uptime is vital to your on-highway business. When it comes to downtime, you simply can’t afford to wait. As your premier diesel engine and transmission resource, we’ll have you back on the road in no time.

  • Commercial Truck Repair
  • Fleet Maintenance
  • Preventative Maintenance
  • Genuine OEM Parts
  • Engine and Transmission Rebuilds
  • Warranty Support
  • Field Service
  • Emergency Roadside Assistance

A Trusted Brand

Since 1902

With over the century in the industry, we have the expert advantage. Our service footprint includes locations in 11 states. Each service facility offers:

  • Bays Available Now
  • 50-State Warranty on All Parts
  • Factory Tooling
  • Large Parts Inventory with Excellent First Pass Fill Rates
  • Experienced, Factory Certified Techs
  • 2-Hour Diagnostic Window

Uptime is
Our Business

Safety is Our Focus

Engine and Transmission Sales & Service

We have been a partner of Allison Transmission since 1973, and Detroit diesel engines since 1938. We are the factory authorized dealer for Allison Transmission and Detroit in Texas, Louisiana, New Mexico, Arizona, Colorado, and Wyoming.

Factory Authorized Parts & Service

Whether you’re in our shop or on the road, we have you covered with trusted service at our branches, roadside, or on-site.

Genuine OEM Parts

We offer certified OEM parts at an affordable price. Service and repair performed at our service branches ensure that your warranty is always protected and maintained.

WheelTime Promise

  • Two-Hour Diagnostic
  • Job Done When Promised
  • Invoiced As Quoted – No Surprises
  • Fast Turnaround
  • Fixed Right the First Time

Warranty & Field Service

Protecting Your Warranty:
We provide complete support of OEM provided warranties for products we distribute and manufacture.

Field Service:
Our field service provides on-site repair to reduce downtime, logistics, and hassle for remote customers and large equipment that’s not practical to move.

Engine and Transmission Rebuilds

Our service shops feature chassis and engine dynamometers and have the capability to overhaul engines and transmissions. We can perform the following:

  • Replacement of Worn Parts
  • Minor Overhauls
  • Total Rebuilds

Emergency or Scheduled Repairs & Maintenance

Stewart & Stevenson can handle any required service, from emergencies to scheduled maintenance services. All maintenance, scheduled or unscheduled, is designed to keep you ahead of potential issues and help mitigate costly downtime.

Our ‘swing’ replacement service delivers quick replacements and minimizes downtime with better value than new equipment. We use genuine OEM parts on all rebuilt equipment.

Technician Training

Best-In-Class & Factory Authorized

Our factory authorized, professional educators can provide standard or customized training to meet your individual needs. In-depth product line training options include:
  • Operational Training
  • Maintenance Training
  • Service Training
  • Troubleshooting
Get Trained

For training-related questions, please call the Training Center at (713) 803-0700 or (800) 967-2190, or click Get Trained to send us an email.