Cummins Engine Diagnostics & Repair You Can Trust
When a Cummins-powered bus isn’t running right, downtime disrupts routes and riders. You get rapid, precise diagnostics with OEM-level scan tools, pressure/vacuum testing, and guided fault tracing—so problems are confirmed before parts are replaced. Our mobile team arrives equipped for common field repairs and can transition seamlessly to our 62,000 sq. ft. facility when bigger work is required (think in-frame repairs or engine replacements).
Common issues we resolve include:
- Check engine lights and stored fault codes (driveability, derates, no-starts)
- Injector performance and high-pressure fuel concerns
- DPF loading, failed regens, and DEF/NOx sensor faults
- Excessive oil consumption and crankcase pressure abnormalities
- Turbocharger/VGT actuator malfunctions and boost leaks
- EGR coolers, valves, and SCR dosing problems
After repairs, we verify with code clears, functional tests, and—when safe—road validation. If a unit needs body or panel work related to an incident, our 65-foot paint tank booth handles large surfaces with consistent, high-quality results. You’ll also appreciate clear notes, photos where helpful, and straightforward next-step recommendations.
Why Choose Bus And Truck Of Chicago?
You get mobile capability backed by serious capacity. Our teams work confidently around long-wheelbase and articulated buses, ADA door and ramp systems, and multiplexed wiring. We perform extensive suspension work as well, so ride-quality complaints tied to engine torque steer or vibration are addressed holistically—not in isolation. Service scales to your operation: batch PMs during off-peak windows, targeted campaigns for recurring faults, or rapid triage when a bus stops mid-route. Recognizable organizations rely on our work, including the Chicago Transit Authority, U-Haul, and the University of Illinois–Chicago. One call yields clear ETAs, proactive communication, and repairs completed either curbside or in our facility—whichever gets you back in service sooner.
Contact Us About Cummins Engine Repair Now: Call 773-692-3556!
If you’re noticing power loss, emission warnings, or hard starts on a Cummins engine, call 773-692-3556. We’ll confirm the unit location and symptoms, dispatch the right technician and parts, and complete repairs on-site when feasible. Bigger jobs move directly into our Bedford Park shop without losing momentum.
FAQs
What Is The Service Life Of A Bus?
Many commercial buses serve 12–15 years, but life varies with mileage, routes, and care. Consistent engine maintenance—filters, fluids, valve adjustments where specified, and emissions service—extends reliability. With attentive upkeep, Cummins-powered buses routinely achieve high-mileage milestones while maintaining acceptable performance and emissions.
How Many Years Does A Bus Last?
It’s common to see 15–20 years when buses receive timely diagnostics and corrective repairs. Emissions components benefit from proper DEF quality, frequent inspections, and addressing minor leaks early. Proactive cooling-system service and turbo/air-leak checks also protect the engine and help preserve service life over time.
Ready To Schedule Cummins Engine Service For Your Bus?
Call 773-692-3556 now. Serving Bedford Park, IL and nearby communities - including Naperville, IL, Aurora, IL, Evanston, IL, Gary, IN, Joliet, IL, Bolingbrook, IL, and Chambert, IL - we arrive prepared, communicate clearly, and back every mobile visit with full in-house capability when the job demands it.
Trusted By Leading Municipalities, Fleets & Customers Throughout Chicago
Great experience from beginning to end. We had never used Bus & Truck of Chicago and what a great surprise! Angela made the whole process worry free, from the estimate to the final product.
Bus & Truck of Chicago is excellent! When my company's truck needed repairs, I took a chance on Bus & Truck Chicago and it really paid off. They were able to fix all the mechanical and body issues in three days, saving us a ton on rentals.
Our experience with B&T has been wonderful so far. Our lift stopped working. We weren't able to use our bus. Angela and her staff were absolutely spot on in all aspects.
Very professional, great work, customer service was outstanding, we wouldn't take our truck anywhere else.
Took my truck here for an alignment, they did an amazing job, fast in and out, definitely would recomend them!!!
They fix everything. They have no issue with you showing up with the part and changing whatever part you want. Not like other shops that insist they diagnose the issue.
"Wonderful company to deal with. Very professional and accommodating to our company’s needs. Service is fast and efficient. We have brought 5 trucks over for repairs in the last 3 months and have NOT had 1 issue with the service or the repairs. Cannot be happier with this company."
