Maximize Uptime.Anywhere in Seattle.
Family-owned heavy-duty truck repair and fleet maintenance — high-quality shop work in Sumner, backed by mobile roadside support that brings the shop to you. Less downtime, fewer tows, trucks that keep earning.
- Family-owned & operated
- Shop + mobile service
- Heavy-duty diesel specialists
- Family
- Owned & operated
- Shop + Mobile
- Two ways to get fixed
- Greater Seattle
- Service area
- Heavy-Duty
- Diesel specialists
Heavy-duty repair built around your fleet
Three core services that cover the work that keeps commercial trucks on the road — from the shop floor to the roadside.
A repair partner, not a parts counter
Fleet managers and owner-operators choose us because we treat uptime as the job — not an afterthought. Trustworthy shop repairs, the flexibility of mobile service, and people who actually answer the phone.
Family-Owned & Accountable
You deal with the people who own the shop. Honest assessments, fair pricing, and repairs we stand behind — not a corporate service desk.
Heavy-Duty Specialists
Experienced diesel technicians handling complex engine, emissions, and driveline work with OEM-grade parts and precision machine work.
Built Around Your Uptime
Fast diagnostics, clear timelines, and the option to bring the shop to you — every decision aimed at getting your trucks back to earning.
Greater Seattle Coverage
Based in Sumner with mobile units serving fleets and owner-operators across the South Sound and the wider Seattle metro.
From breakdown to back on the road
Call or request a quote
Tell us the truck, the symptoms, and your timeline. We respond with straight answers — no runaround.
Diagnose — shop or on-site
Bring it to Sumner or we roll a mobile unit to you. We pinpoint the real problem before parts get ordered.
Repair done right
Quality work with OEM-grade components and a clear scope, so the fix holds and the surprises stay off your invoice.
Back on the road
We get you rolling fast and keep records that make the next service — and your fleet planning — easier.
Proudly serving Greater Seattle
Our Sumner facility and mobile units keep commercial fleets moving across the South Sound and the wider Seattle metro. If you run trucks here, we can help.
- Sumner
- Puyallup
- Tacoma
- Fife
- Auburn
- Kent
- Federal Way
- Renton
- Seattle
- Bellevue
Frequently asked questions
Quick answers to what fleet managers and owner-operators ask us most. Don't see yours? Call us — we're happy to talk it through.
What types of trucks and engines do you work on?
We specialize in heavy-duty commercial trucks and diesel engines — the tractors, straight trucks, and fleet vehicles that businesses depend on. Our technicians focus on commercial diesel equipment, from major engine work to emissions systems and roadside repairs.
Do you offer mobile or roadside repair?
Yes. Our mobile units bring diagnostics and emergent repairs to your yard or the roadside across the Greater Seattle area, cutting towing time and getting drivers moving again fast.
Can you service DPF and emissions systems?
Absolutely. We provide DPF cleaning and flow testing, aftertreatment and DEF diagnostics, forced regen and derate resolution, and EGR/SCR/sensor repair to keep your trucks compliant and out of derate.
What areas do you serve?
We're based in Sumner, WA and serve the Greater Seattle area and the wider South Sound, including Sumner, Puyallup, Tacoma, Fife, Auburn, Kent, Federal Way, Renton, Seattle, Bellevue. If you run commercial trucks in the region, we can help.
How do I get a quote?
Call us at (206) 304-6870 or send a message through our contact form. Tell us the truck, the symptoms, and your timeline, and we'll respond with a straight answer and a fair quote.
Are you really family-owned?
Yes. Emerald Fleet Services is family-owned and operated. When you call, you deal with the people who own the shop and stand behind the work — not a corporate service desk.
Ready to reduce downtime?
Get a straight answer and a fair quote from technicians who treat your rig like it carries our name.