Diagnostics
What to Bring to a Truck Diagnostic Appointment
Help your repair shop investigate an intermittent truck problem with a clear symptom history, fault-code photos, vehicle details, and maintenance records.
3 min read
Truck, Equipment & Reefer Repair for Chicagoland Fleets
Diesel service for your whole operation: trucks, trailers, reefers, construction equipment, municipal fleets, and truck-mounted systems.
One Shop for the Whole Fleet
We work on all equipment: construction and municipal units, truck-mounted systems, trucks, trailers, and refrigeration. One team for the equipment your operation depends on.
The Makes We Service
Truck, engine, and refrigeration makes we service. For construction, municipal, or other equipment, tell us what you run.
Trucks & Engines
Transport Refrigeration
Dealer & Authorized Service Center
We also work directly with these manufacturers.
Why Fleets Choose Big Rig Fixer
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One Team for Trucks and Working Equipment
Construction, municipal, and truck-mounted equipment alongside trucks, trailers, and reefers. Keep the vehicle and the equipment it powers in the same service conversation.
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Reefer Specialists: Carrier & Thermo King
Transport refrigeration work stays in-house, right next to the truck and trailer work, so cold-chain units aren’t waiting on a second vendor.
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ASE-Certified Technicians
Diagnostics, brakes, electrical, aftertreatment and refrigeration work done by certified techs.
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A Fleet Program Built Around Uptime
Scheduled preventive maintenance, priority scheduling and one point of contact. Mobile service is available when a unit can’t come to us.
Fleet Management Program
Plan service across your trucks, trailers, reefers, construction and municipal equipment, and truck-mounted systems. Keep maintenance due dates, operating hours, and open repairs connected to the right unit.
Scheduled Maintenance
Proactive maintenance scheduling to prevent costly breakdowns
Priority Service
Fleet customers get priority scheduling and dedicated service advisors
Cost Management
Detailed reporting and cost analysis to optimize your fleet expenses
Quality Assurance
Rigorous quality checks on all fleet services
Dedicated Support
Assigned fleet coordinator to manage all your service needs
Mobile Service
On-site service capabilities to minimize downtime
Ready to Optimize Your Fleet?
Plan maintenance with the Big Rig Fixer team. Get a custom fleet management proposal today.
Diesel Force™ Maintenance Program
Comprehensive diesel cleaning that removes buildup, improves efficiency, and extends component life
Is your diesel engine battling a buildup of emissions or running less efficiently? These issues lead to higher maintenance costs and reduced power. Our Diesel Force™ Maintenance Program cleans your engine's EGR, oil, and fuel systems, helping it run cleaner and stronger with long-term savings.
Key Benefits
Comprehensive Cleaning: Targets all critical components
within the EGR, fuel, and oil systems
Improved Fuel Efficiency: Reduces soot buildup,
lowering emissions, and enhancing fuel efficiency
Extended Component Life: Helps reduce wear on essential
components, including the EGR valve, DPF, and VGT
Cost Savings: Prevents expensive component replacements,
keeping your maintenance costs lower over time
See the Difference
EGR Valve Cleaning Results
EGR Cooler Cleaning Results
What Our Clients Say
Don't just take our word for it. Here's what fleet managers and owner-operators are saying about their experience with Big Rig Fixer.
Ready to Join Our Satisfied Customers?
Experience the Big Rig Fixer difference for yourself
Schedule Your ServicePractical Advice for the Road Ahead.
Fleet Management
How to Plan Fleet Repairs Around Dispatch
Build a practical repair handoff between drivers, dispatch, and the shop, with clear priorities, approvals, parts decisions, and return-to-service records.
3 min read
Refrigeration
Reefer Temperature Problems: A Better Service Handoff
Document a reefer temperature concern with setpoints, alarms, operating mode, door activity, and load information before arranging refrigeration service.
3 min read
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Ready to Get Your Fleet Back on the Road?
Don't let equipment failures slow down your business. Contact Big Rig Fixer today for reliable diesel repair services that keep your fleet moving and profitable.
Visit Our Shop
Full-service facility in Carol Stream, IL
27W010 St. Charles Rd, Unit CCarol Stream, IL 60188
Business Hours
Professional service during business hours
Mon-Fri: 9AM-4:30PM
Sat & Sun: Closed
Sat & Sun: Closed
Expert Diesel Technicians
Fleet Management Programs
Mobile Repair Services