Four Seasons Diesel Services
Comprehensive Fleet, Diesel & Gasoline Repair
From Class 8 commercial rigs to light-duty trucks — factory-level diagnostics and mechanical repairs in Tacoma, WA.
About Us
At Four Seasons Diesel Services, our mission is to keep our community moving safely by providing family-owned, honest, and consistently high-quality diesel repairs. We treat every vehicle like our own, ensuring reliable workmanship and transparent customer care you can depend on, season after season.
Based in Tacoma, Washington, Four Seasons Diesel Services provides premium, factory-level diagnostics and mechanical repairs for fleet owner-operators and private vehicle owners throughout Pierce County.
We specialize in managing the entire spectrum of your fleet, delivering dependable solutions for everything from massive Class 8 commercial diesel rigs down to light-duty gasoline trucks and cars. Our shop balances heavy-duty mechanical expertise with advanced digital software platforms to keep you safely on the road.
Meet the Crew
The people behind every repair — experienced, honest, and dedicated to keeping you on the road.
Service Manager
Scott
Oversees all shop operations, technician workflow, and quality control to ensure every job meets our high standards.
Service Advisor
Cliff
Bridges the gap between the shop floor and the customer — translating technical findings into clear, actionable repair plans.
Office & Accounting
Crystal
Handles the behind-the-scenes work that keeps the shop running smoothly for our customers.
Diagnostics
Engine & Diagnostics Specialist
Armondo
Factory software, bidirectional testing, engine rebuilds — Armondo goes deep on the hard calls that keep your rig out of the dealership and back on the road.
Engine & Diagnostics Specialist
Ricky
Specializes in complex engine diagnostics and precision repairs across diesel and gas platforms, with a sharp eye for electrical and fuel system faults.
Engine & Diagnostics Specialist
Der
Brings hands-on diagnostic expertise and a methodical approach to every job — from fault code analysis to full engine teardowns.
Floor Techs
Floor Technician
David
Handles everything from routine maintenance and brake work to complex drivetrain repairs — fast, thorough, and built on real-world experience.
Floor Technician
Logan
Skilled across diesel and gas systems, Logan keeps the shop floor moving — tackling suspension, electrical, and mechanical repairs with precision.
Our Service Capabilities
Full-spectrum mechanical expertise for every vehicle in your fleet.
Heavy Diagnostics
Advanced electronic troubleshooting and computer diagnostics to isolate complex electrical and engine issues quickly.
Routine Maintenance
Preventative care including fleet compliance inspections, lube services, safety checks, and mileage-interval oil changes.
Brakes & Suspension
Complete air brake overhauls, hydraulic brake replacements, steering gear timing, and heavy-duty suspension rebuilding.
Engine Repair & Swaps
Expertise ranging from precision top-end overhead adjustments to full-service heavy-duty engine replacements.
Customer Reviews
What Our Customers Say
Real feedback from fleet operators and truck owners who trust us with their vehicles.
“Four Seasons Diesel was the best mechanic service that I have ever used! Scott figured out the issue with my truck in a couple of minutes and squeezed me into their packed schedule so I could get back on the road. They are extremely professional and very kind! They do not price gouge or give you parts that you don't need. I will definitely recommend them to anyone with a diesel.”
Jessica M.
Diesel Truck Owner
“These guys are legit! I'm super OCD with my 04 LBZ Duraburb and I had an annoying P0203 cylinder 3 injector code. They did not give up and try to sell me new injectors or any other unnecessary parts. They found a loose pin in the ECM plug that controls the #3 injector. Duraburb is running great again — very busy for a reason.”
Steve Cooke
2004 LBZ Duramax Suburban
“Scott and his team are quite literally the only mechanics I trust with my van. They completely transformed it — taking it from driving like 'grandpa's van' to an unstoppable machine. They did a full bulletproof engine conversion along with countless other upgrades. Top-tier work, incredibly friendly staff. I am a happy, loyal customer for life!”
James Sauer
Sportsmobile Ford E350 6.0 Diesel 4x4
“Been very happy with this shop. I got a new truck and the stock turbo went out — they were able to get me scheduled in and fixed within a week. Very professional and great communication throughout the whole process.”
Tyler B.
Diesel Pickup Owner
“Honest, fair, and incredibly knowledgeable. They diagnosed an issue three other shops missed and had me back on the road the same day. Four Seasons is the only shop I'll trust with my fleet from here on out.”
Mike R.
Fleet Owner-Operator
Happy with our service? Let others know.
Leave Us a Google ReviewFactory-Level Diagnostic Software
We hook directly into your vehicle's factory modules using the exact same software platforms used by the dealerships — enabling advanced bidirectional testing, parameter changes, and module flashing.
Medium & Heavy Duty Diesel Suites
Light Duty & Domestic Gas Platforms
Fleetio Certified Partner
Auto-Sync Enabled
We're a proud Fleetio partner — giving fleet operators real-time visibility into every repair, inspection, and maintenance event.
- Vehicle Check-In
- Inspection & Diagnosis
- Repair & Parts Tracking
- Auto-Sync to Your Fleet
Ready to Get Back on the Road?
Call us, send a message, or stop by the shop.
5309 84th Street East, Tacoma, WA 98446
- Monday – Friday8:00 AM – 5:00 PM
- Saturday – SundayClosed