Truck Diagnostics
At Northwest Fleet LLC, we specialize in advanced diagnostics using the latest dealer-level scan tools and software for all major brands including Cummins, Detroit Diesel, PACCAR, Volvo, Mack, and International. Our ASE-certified technicians can quickly read and clear fault codes, perform forced regenerations, reset aftertreatment systems, and troubleshoot complex electrical and emissions issues. Whether you're dealing with a check engine light, DEF system faults, erratic sensor readings, or performance complaints, we pinpoint the root cause accurately the first time.
Comprehensive Testing
Beyond basic diagnostics, we offer full-system testing to ensure your truck is operating at peak efficiency and compliance. This includes brake performance analysis and DOT inspection prep with detailed reporting. We also perform thorough aftertreatment system testing (DPF, DOC, SCR), turbocharger and EGR evaluations, and fuel system pressure testing. Every diagnostic session includes a complete health report with code explanations, recommended repairs, and priority levels so you can make informed decisions for your fleet.
Minimal Downtime
Located conveniently for Pacific Northwest businesses, Northwest Fleet LLC understands that your truck needs to stay on the road. Most diagnostic services are completed the same day, often within 1-2 hours, with transparent flat-rate pricing and no surprise fees. Our shop is equipped to handle everything from quick scans to in-depth electrical diagnosis on-site. Trust Northwest Fleet LLC to keep your fleet running stronger, cleaner, and longer.
LET'S GET STARTED
Northwest Fleet LLC is your one stop shop for all things Commercial Fleet Maintenance and Repair.