Truck and Trailer Repair Services

At Sound Truck & Trailer Repair, we provide several different services for clients throughout Washington State.  Most if not all services can be performed at our shop location in Pacific, WA.  We also provide mobile repair services, and 24-hour emergency services to clients.


Our Fleet Services are by hour, or contract.

At STTR, we can inspect your  fleet to insure your DOT inspection is as smooth as possible.

We provide comprehensive Annual Department of Transportation Inspections; All commercial motor vehicles (CMV) that weigh more than 10,000 pounds must undergo annual DOT inspections.

There are six primary levels of DOT inspection.   These may be conducted anywhere by a qualified DOT inspector or state police officer.

Please contact us today for more details.


We specialize in Heavy, Medium and Light Duty Truck and Trailer — Preventive Maintenance.

Nothing worse than unexpected expenses and loss of time when there is a delivery to be made.  At Sound Truck & Trailer Repair, we encourage both established clients and new to consider preventive maintenance on all of their commercial vehicles and trailers.

You can expect a significant decrease in costs related to “band-aid” fixes as a result of possible missed deliveries. When a company is “strapped for cash”, it is likely emergency repairs rather than full restorative services are made on a regular basis. Temporary repairs may get you back on the road to get home or make your final delivery—they are not to be considered a long-term solution.

Working preventive maintenance into the operating costs of your vehicle is the SMART choice to running a successful and prosperous business.

Mobile Service (24 Hours a day)

Have you been on the road far from your hub and you hear something odd coming from the back of your rig?

At Sound Truck & Trailer Repair, we have seen a hundred different situations that can lead to a breakdown on the side of the road leaving you stranded with your haul—at times some of those situations can be catastrophic; risking your business, your reputation and lives.

We have 7 state of the art service trucks that are equipped from bumper to bumper, and bumper to hitch—with the latest tools and testing equipment to quickly diagnose and repair your truck and trailer with the goal to get your back on the road to make your delivery on-time and get you back home safely.

Commercial Tires

I bet you did not know that STTR also sells commercial tires.

At our shop in Pacific, WA we have a whole bay dedicated to commercial tires, mounting, dismounting and balancing.

You can find tires for steering, drive and trailer in many different sizes. We can special order certain brands and tread styles for all weather condition–if our in-stock does not meet your specific needs.

Contact us today for a quote for tires, mounting, balancing, installation, torque and tire disposal.

We can also work with you on wheel selection for both your commercial and off-road needs.

Welding Services

At our shop in Pacific, WA and on our mobile service trucks we are equipped to weld both steel and aluminum.  Our mechanics are capable of providing superior welding services, paying close attention to proper joint and bead placement.

We are proficient in: TIG, MIG, Arc, Aluminum MIG, Helliarc, and Acetylene oxygen cutting processes.

  • Shielded Metal Arc Welding (SMAW) …
  • Gas Metal Arc Welding (GMAW/MIG) …
  • Flux Cored Arc Welding (FCAW) …
  • Gas Tungsten Arc Gas Welding (GTAW/TIG)

After Market

At Sound Truck & Trailer Repair, we like our service trucks to look their best on the road.  Sporting some of the latest technology in both interior and exterior LED lighting for efficient, longevity and brightness.

We carry chrome components for comfort, protection and vanity, seats, headache racks, chain racks, boxes, light bars and more.  Our showroom is part of an exclusive partnership with The Parts Dock located next door to our shop in Pacific, WA.

For all of your after market needs both for comfort, protection and vanity—visit us at our store or place an order online

We are proud to be housed in a 12,000 Sq. Ft. Repair Facility.
We provide Repair and Service for ~ Truck, Trailer, and Automotive ~ QuickDraw Sales and Install
Lift Kits ~ Custom Wheels and Tires ~ After Market & Performance Parts ~ Custom Fabrication
…and MORE!!!


Regular inspection, maintenance and repair will keep the driver, truck, trailer and everyone on the road with them as safe as possible.

It is important that as a truck driver, regular maintenance of your tires, drums, rotors, air cans and lines, adjusters, seals, bearings, fittings and S Cams are inspected routinely. Our shop in Pacific, WA has all the equipment and tools to get the job down right the first time and you back on the road.

When should brakes be serviced?

Set up a routine plan for having your brakes checked for signs of wear and need for replacement. The driving habits of the driver and the route taken regularly, including tire wear, poor suspension and overloading  issues will weigh significantly on the frequency of inspections.

It’s best to have the brakes inspected and maintained every time you have the truck’s preventive maintenance on your truck, trailer or equipment.


When it comes to suspensions on a commercial vehicles, especially a semi truck and trailer hauling products for local and long-haul—a good working suspension—helps not only with keeping you on the road enjoying a smooth ride, but can be attributed to better fuel economy and less wear and tear on other critical systems such as your drive-train, tires, brakes, and other vital components.

There are many moving parts in a suspension: Shocks, Air Bags, Leaf Springs etc.  Regular inspection of the bolts and brackets and the replacement of worn parts will insure these critical components of your commercial vehicle, semi-truck and trailer gives you many years of trouble free service.

Electrical – the nervous system of any machine

A good working and efficient electrical system is the nervous system of any machine—a commercial vehicle is no different.

There are thousands of feet of wiring throughout a vehicle–powering everything from temperature and cooling, computer controlled components, electrical timing and fuel efficiency, lights, gauges, communication, locks and more.

A electrical short can wreak havoc throughout an entire electrical grid where flicking lights or incorrect gauges aren’t the source of the short—making diagnosis that more difficult based on the severity of the short, surrounding environment and elements.

More so… poor insulation, wear indicators, erosion from outside elements, and fire hazards are all possible concerns for unexpected breakdowns as a result of a poor electrical system.

Stop-in today for an inspection.

Exhaust – DPF

You may not think that the exhaust system of a vehicle is all that important—consider this: it is the exhale of a good working breathing machine.

Allowing exhaust fumes to leave a proper working engine contributes to fuel economy, reduces noise pollution and particulates in the environment with the use of eco-friendly carbon filtering systems.

A diesel particulate filter (DPF) is a device designed to remove diesel particulate matter or soot from the exhaust gas of a diesel engine. Because a DPF only has a finite capacity; this trapped soot periodically has to be emptied or ‘burned off’ to regenerate the DPF–otherwise you can risk creating back-pressure. If your DPF needs a parked or forced-regen, STTR has the knowledge and equipment to help you.

Everything from mufflers, flex tube, clamps and fittings, to proper piping contributes to a good exhaust system for any semi-truck or commercial vehicle—we have the expertise to handle your exhaust related maintenance and repair.

Cooling Systems

Engine temperature; heavy, medium and light duty trucks, plus automotive –should have properly maintain cooling systems.  It is important for the health of the engine to keep a good running and efficient cooling system.  High temperatures for long periods of time can shorten the life expected life of an engine.

Engines are regulated by valves, radiators, coolant, fan hub / clutch fans and pumps—that keep an engine at the  proper operating temperatures but also provide heating for the driver’s cabin.

Cooling / AC Systems —add air-conditioning to cool the drivers cab during the summer months.  During a preventive maintenance of your commercial vehicle, have your AC checked and serviced.

Fuel & Fuel Systems

Everything from fuel delivery to inspecting fuel systems, STTR has the equipment, tools and experience to making sure you are not sidelined on the back-roads–hundreds of miles from your hub, or just a few miles from your last delivery of the night.

Properly maintained fuels systems contributes to road safety, less spills, free from fire and toxic hazards, as well as fuel economy.

Maintenance and services of fuel pumps, fuel lines and filters should be part of a regular inspection.

Air System

Just like other major components of a commercial vehicle, especially a semi truck and trailer—the air system is a critical component that contributes to safety and comfort. Air systems include: air compressor, D-2 governor, air dryer, air tank and reserve, valves, brake chambers, air lines etc.

Proper inspection and maintenance is crucial to keeping you on the road and not on the sidelines.

Drive Train

Drive trains consist of several moving parts that are inter-connected with specific loads, torque and connects the wheels to the transmission, which connects to the engine.

Proper inspection and maintenance of your transmission, clutch, drive line, rear end gear box and U-Joints are a must for a good working system.

Hydraulic Systems

Hydraulics both in the cab and trailer are critical systems with many moving parts. Proper preventive maintenance is in order and should be inspected regularly.  This includes: hoses, fittings, clamps, bolts, and lubrication to just name a few.

You may be surprised to learn that hydraulic inspections go farther than just checking fluids levels, hoses and wear and tear—-but proper weight bearing standards, a proper extension from a closed state to extended open state are just a few of the items tested when looking at your hydraulics.

We at STTR can not emphasis enough the importance of  having proper operating hydraulics for your safety and others around you.


Office Hours: M-F 8 AM-5 PM PST // After-hours: Nights 5 PM – 8 AM PST


STTR is your number one source for repair needs. We surpass the competition, in not only value but exceptional customer service.

Our trained technicians are experienced in truck repair, trailer repair, tires, and much, much more! We are a service-oriented company that strives to meet or exceed your expectations.



(253) 691-6645



(253) 987-7757


24 / 7 / 365 Days - Year around

Repair Shop - Pacific, WA

898 Valentine Ave SE, Pacific, WA 98047


24 / 7 / 365 Days - Year around