Clean Truck Check

Race stripes

Heavy-Duty Inspection and Maintenance (HD I/M) Program

At MAS Enterprises, we're committed to helping heavy-duty vehicle owners meet California’s Clean Truck Check requirements, ensuring compliance while contributing to cleaner air for everyone. The Clean Truck Check program, part of California’s Heavy-Duty Inspection and Maintenance (HD I/M) strategy, is designed to reduce emissions from heavy-duty diesel vehicles over 14,000 pounds.

While we do not offer repair services for Class 6, 7, or 8 trucks (those over 19,500 lbs GVW), we do provide emissions testing under this program to help ensure your vehicles meet state standards. Together, we’re helping California reach its air quality goals.

Infographic MAS Auto Clean Truck Check

Why Clean Truck Check?

California has some of the strictest air quality standards in the nation, and for good reason. Heavy-duty diesel vehicles, despite their vital role in our economy, are significant sources of air pollution, including nitrogen oxides (NOx) and particulate matter (PM 2.5). These pollutants impact public health, especially in communities near major highways and transportation hubs. The Clean Truck Check program is an initiative by the California Air Resources Board (CARB) to reduce these emissions and promote a healthier environment for all Californians.

Our Role in the Clean Truck Check Program

As a trusted auto repair shop, MAS Enterprises is here to help heavy-duty truck owners maintain compliance with Clean Truck Check standards. We offer the necessary inspections, maintenance, and repairs to ensure that your vehicle's emissions control systems are working properly and effectively. Our services include:

  • Emissions Diagnostics: Using advanced diagnostic tools, we can assess your truck's emissions systems and identify any issues that might prevent it from meeting Clean Truck Check requirements.
  • PM and NOx Emission Control Maintenance: We specialize in maintaining and repairing diesel particulate filters and selective catalytic reduction systems, key components in controlling particulate matter and NOx emissions.
  • Compliance Assistance: We stay updated with Clean Truck Check requirements to make sure you’re fully informed of inspection intervals, data reporting needs, and upcoming regulation updates.
Inforgraphic MAS Auto Clean Truck Check Program

Clean Truck Check

This is a free program by the California Air Resources Board (CARB), designed to improve air quality and reduce pollution from heavy-duty vehicles on California’s roads.

Ready to Get Started?

Take the next step towards cleaner air and a compliant fleet. Contact MAS Enterprises today to schedule your Clean Truck Check service and learn more about how we can support you in meeting California's environmental standards. Together, we can make a difference in California’s air quality, one truck at a time.

Contact us today to learn more about how we can help you qualify for this program and get you back on the road with a cleaner, smarter car. Don’t wait—take advantage of this opportunity to improve your ride and make a positive impact!