We deliver advanced fleet diagnostics to keep your commercial trucks compliant and road-ready. We identify problems before they cost you time, money, or downtime. Trust us with all your diagnostic needs.
Diesel Fleet Diagnostics in Denver, CO, and Kalispell, MT
Our diesel fleet computer diagnostics uncover hidden issues using dealer-level scan tools and real-time data analysis. Whether you’re seeing warning lights, poor fuel economy, or unexplained performance issues, our technicians plug in directly to your fleet’s ECMs.
We read fault codes, analyze emissions systems, and deliver fast, clear repair paths for every truck in your lineup. We support small and large fleets with diagnostic services that cut through guesswork—and get results.
Full-Service Fleet Diagnostics
Iron Buffalo’s diagnostic services help you catch issues early and make informed maintenance decisions. Our services include:
- Engine Control Module (ECM) scans and resets
- Fault code detection and clearing
- Live data stream analysis
- Sensor and actuator testing
- Aftertreatment and DPF system diagnostics
- DEF system and SCR component testing
- Turbo and EGR valve performance checks
- Emissions system fault isolation
- Electrical system and wiring troubleshooting
- Diagnostic planning for multi-vehicle inspections
- Pre-inspection and compliance verification
Our team works with OEM software and universal diagnostic platforms to handle fleets made up of mixed makes and models.
What Makes Us Different
Our technicians go beyond code reading. We interpret results, explain what they mean, and recommend effective repairs or adjustments that fit your operation. Whether you’re addressing a CEL across multiple trucks or troubleshooting emissions system failures, we respond with accuracy and urgency.
With mobile diagnostics available and large service bays at both our Denver and Kalispell locations, Iron Buffalo offers flexible support wherever your trucks are based.
Need a Fleet Diagnostic Service?
Have multiple trucks throwing codes or struggling with performance? Call Iron Buffalo at 303-623-7049 (Denver) or 406-890-7001 (Kalispell). We’ll diagnose the issue and help your fleet get back on the road.
FAQs
What Areas Do You Serve?
We offer 24/7 mobile repairs and roadside assistance in the following areas:
Colorado: Boulder, CO; Aurora, CO; Centennial, CO; Fort Collins, CO; Greeley, CO; Georgetown, CO; Brighton, CO; Castle Rock, CO; Colorado Springs, CO; and Longmont, CO.
Montana: Whitefish, MT; Bigfork, MT; Somers, MT; Polebridge, MT; Thompson Falls, MT; Polson, MT; Rollins, MT; Libby, MT; and Eureka, MT.
Can You Diagnose Multiple Trucks at Once?
Yes. We specialize in multi-vehicle diagnostics and support fleets with scheduled diagnostic days or ongoing troubleshooting across all units.
Do You Use Dealer-Level Diagnostic Tools?
Absolutely. We use OEM-grade diagnostic software and equipment to ensure the most accurate readings and actionable insights.
How Can I Get in Touch?
If you're ready to schedule diesel repairs, call Iron Buffalo today at 303-623-7049 (Denver) or 406-890-7001 (Kalispell). Our team will keep your diesel truck running strong.
Semi Truck Repair & Diesel Services in Denver, CO & Kalispell, MT
At Iron Buffalo, we provide expert semi truck and equipment repair, fleet maintenance, and specialty diesel services to keep your vehicles performing at their best.From semi-truck repair and hydraulic cylinder services to DOT inspections, mobile truck repair, and truck-mounted crane maintenance, our certified technicians deliver reliable solutions tailored to your needs. Whether you need routine preventive maintenance or complex engine diagnostics, our Denver, CO, and Kalispell, MT locations are equipped to handle the job. Contact us to schedule service and keep your semi trucks, trailers, and heavy equipment running strong.
Light, Medium, and Heavy Duty Vehicles & Fleets
Emissions Testing & CARB Clean Truck Check
Trailers, Commercial & Industrial Equipment
Loaders, Truck-Mounted Cranes & Conveyers
Services
Our Services
At Iron Buffalo, we provide expert heavy-duty truck and equipment repair, fleet maintenance, and specialty diesel services to keep your vehicles performing at their best.From semi-truck repair and hydraulic cylinder services to DOT inspections, mobile truck repair, and truck-mounted crane maintenance, our certified technicians deliver reliable solutions tailored to your needs. Whether you need routine preventive maintenance or complex engine diagnostics, our Denver, CO, and Kalispell, MT locations are equipped to handle the job. Contact us to schedule service and keep your trucks, trailers, and heavy equipment running strong.
Customer testimonials
Light, Medium & Heavy-Duty Truck Repair Services in Denver, CO & Kalispell, MT
Trusted Diesel Repair & Fleet Services - Keeping You on the Road & Job Site
Commerce City, CO
5590 E 55th St, Commerce, City, CO
Kalispel, MT
104 Rocky Cliff Lane, Unit 1, Kalispell, MT