Fleet Maintenance Programs

Mobile Service for Diesel Fleets

Welcome

Preventive Maintenance and On-Site Repair Plans for Commercial Fleets

NoCo Diesel Services LLC offers structured fleet maintenance programs for diesel-powered trucks, trailers, and heavy equipment operating across Northern Colorado, Southern Wyoming, and Western Nebraska. Based in Johnstown, CO, we work directly with fleet managers, owner-operators, and logistics companies to keep assets running reliably, reduce unplanned downtime, and ensure DOT compliance.


Whether your fleet includes five trucks or fifty, we provide on-site inspections, diagnostics, preventive maintenance, and emergency repair tailored to your operation and schedule.

Why Fleet Maintenance Programs Matt

Fleet vehicles face daily wear and tear that, if left unchecked, can lead to expensive repairs, missed loads, or compliance violations. A proactive fleet maintenance program helps reduce these risks by:


  • Extending vehicle life
  • Reducing major repair costs
  • Improving safety and uptime
  • Ensuring DOT compliance
  • Maintaining warranty coverage
  • Standardizing service records for audits


By implementing a structured program, your business stays ahead of failures, and your trucks stay on the road.

What’s Included in a Fleet Maintenance Program

We tailor each fleet program to the unique needs of your vehicles, operating hours, and industry requirements. Services can include:

Safety and Compliance Inspections

  • DOT pre-inspection evaluations
  • Brake system diagnostics
  • Suspension and steering inspections
  • Lighting and trailer connections
  • Air system leak testing
  • ABS sensor and light checks

Preventive Maintenance (PM A & B Services)

  • Mobile oil and filter changes
  • Fuel, air, and DEF filter replacement
  • Greasing and lubrication
  • Tire pressure and tread checks
  • Brake wear inspection and adjustment
  • Lighting and electrical checks
  • Hub oil checks and wheel seal inspection
  • Coolant and fluid level checks
  • PM record keeping and service reminders

Diagnostics and Mobile Repairs

  • Engine and ECM diagnostics
  • Aftertreatment and DPF regen support
  • Check engine and ABS light resolution
  • No-start and derate condition response
  • Mobile electrical and wiring repairs
  • Battery, alternator, and charging system tests
  • Trailer brake and lighting repairs

Reporting and Service Tracking

We track every PM, inspection, and repair performed on each unit in your fleet. You’ll receive:

  • Maintenance records for compliance audits
  • Service reminders by date, mileage, or hours
  • Inspection reports with pass/fail notes
  • Parts used and labor time logs
  • Trend tracking for frequent failures
  • Recommendations for preventive repairs

Fleets We Work With

  • Regional and long-haul trucking fleets
  • Construction companies with diesel equipment
  • Local delivery and service truck fleets
  • Oilfield and utility vehicle fleets
  • Agricultural operations and seasonal diesel fleets
  • Equipment rental providers
  • Municipal and public works departments

Welcome

Fleet Air Line Repairs and PM Support

We offer air system inspections and leak detection as part of our preventive maintenance services for fleets. Whether scheduled monthly or as part of quarterly PMs, our air brake support includes:


  • Line routing and damage inspections
  • Valve leak detection
  • Chamber pushrod stroke measurement
  • Hose and fitting torque checks
  • Gladhand seal condition
  • System build-up time verification


We track repairs and provide documentation for compliance records. If you manage a fleet, ask about including air line service in your maintenance agreement.

Ready to Protect Your Fleet? Let’s Build a Program.

NoCo Diesel Services LLC makes fleet maintenance simple, mobile, and customized to your operation. If you're ready to reduce downtime, avoid compliance issues, and improve equipment performance, we’ll help you build a plan that works.