(541) 310-0257

Fagan Fleet Services
Fagan Fleet Services

(541) 310-0257

  • Home
  • Services
    • Mobile Truck Repair
    • 24/7 Roadside Assistance
    • Mobile Fleet Maintenance
    • Preventive Maintenance
    • Bus Repair
    • Trailer Repair
    • Diesel Engine Repair
    • DOT Inspection
  • Repairs
    • Cooling System Repair
    • HVAC Systems Repair
    • Brake Repair
    • Transmission & Clutch
    • Diagnostics & Electrical
    • Driveline Repair
    • Truck & Trailer Alignment
    • Axle Repair
    • Express Lube
    • Oil & Fluid Services
    • Hydraulic Hose Repair
    • Exhaust System Repair
    • EGR & DPF Repair
    • Engine Repair & Rebuild
    • Suspension Repair
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Electrical Diagnostics and Repair — Tri-Cities, WA

What We Do

Intermittent no-start, parasitic draw, chasing a fault code, harness damage. Electrical is the work where 30 years of doing it shows up — we follow the wire, not the guess. Services: ECM and chassis fault code diagnostics, battery testing and replacement, alternator and starter repair, wiring harness inspection and repair, lighting repair (headlights, signals, ABS, trailer 7-way), and charging and grounding system testing.

Why Electrical Diagnostics and Repair?

Modern diesel electrical isn't just battery and starter — it's CAN bus, ECM strategy, sensor inputs, ground integrity. We pull the codes, read the freeze frame data, and chase the root cause to the failed component. 30 years on Class 4-8 means we've seen the failure mode before.

Credentials & Service Area

30 years on Class 4-8 diesel. ASE Master Medium/Heavy Truck Technician. The mobile rig carries what's needed to finish most repairs in one visit instead of two. Service area: Tri-Cities (Kennewick, Pasco, Richland, West Richland), Yakima Valley, Walla Walla / College Place, Moses Lake, and Hermiston / Umatilla / Pendleton (OR). I-82, I-84, I-182, and US-12 corridors. Call (541) 310-0257 to schedule.

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