At Sound Truck & Trailer Repair (STTR, Inc.), we provide professional preventative maintenance services for semi trucks, heavy-duty and medium-duty trucks, and commercial trailers. Whether you’re a solo operator running your rig or managing a fleet of vehicles, our goal is to keep you rolling—safely, efficiently, and in full compliance with DOT standards.

Expert Maintenance for Heavy & Medium-Duty Trucks

Preventative maintenance helps catch small issues before they become major repairs. Our experienced technicians use advanced diagnostic tools to keep your equipment in top condition.

Our services include:

• Oil & Filter Changes

• Brake System Inspections & Service

• Suspension & Steering Checks

• Battery & Charging System Testing

• Cooling System Maintenance

• Electrical & Air System Diagnostics

• Hose & Belt Replacements

• Lighting & Safety Equipment Checks

• Full DOT Inspections & Preventative Checks

We service all makes and models, including:

• Freightliner, Kenworth, Peterbilt, Volvo, Mack, International and more

• Dry Vans, Reefers, Flatbeds, Tankers, Utility Trailers, and Custom Haulers

Schedule Maintenance That Works for You

Maintenance services are available Monday through Friday, 8:00 AM to 5:00 PM, at our facility located at 898 Valentine Ave SE, Pacific, WA 98047. We welcome both owner-operators and fleet managers to schedule recurring or one-time service visits.

At STTR, we make it easy to stay on schedule and on the road.

Why Choose STTR?

• Family-Owned & Operated Since 2008

• Certified Technicians with Real-World Experience

• Fast Turnaround Times

• Transparent Estimates & Communication

• Trusted by Solo Drivers and Large Fleets Across the Puget Sound

📞 Call (253) 691-6645 to schedule your maintenance service today, or request an appointment online.

Stay safe, stay compliant—stay on the road with STTR.