At Master Auto Care, we proudly offer Heavy-Duty Diesel Smog Check services that comply with California’s Clean Truck Check (HD I/M) program.




The Clean Truck Check (Heavy-Duty Inspection and Maintenance Program) aims to reduce harmful emissions from heavy-duty vehicles. It applies to most diesel and alternative-fuel trucks and buses with agross vehicle weight rating (GVWR) over 14,000 pounds, whether registered in California or operating within the state.
Staying compliant with CARB’s regulations helps vehicle owners avoid potential fines, registration delays, and other costly issues.


A thorough examination of your vehicle’s emissions control equipment to confirm all components are installed and functional.

We perform a diagnostic test to detect any faults that could affect your emissions, ensuring your truck is compliant with CARB’s standards.

Our certified team has extensive knowledge of diesel emissions systems and CARB compliance requirements.

Our facility is located at 9233 Archibald Ave., Rancho Cucamonga, CA 91730 , providing easy access for customers in the Inland Empire region.


Our facility is located at 9233 Archibald Ave., Rancho Cucamonga, CA 91730 , providing easy access for customers in the Inland Empire region.

Our facility is located at 9233 Archibald Ave., Rancho Cucamonga, CA 91730 , providing easy access for customers in the Inland Empire region.

Our certified team has extensive knowledge of diesel emissions systems and CARB compliance requirements.

Our facility is located at 9233 Archibald Ave., Rancho Cucamonga, CA 91730 , providing easy access for customers in the Inland Empire region.


We offer both phone and online appointment booking to accommodate your schedule.

We ensure your vehicle stays compliant with California’s ever-evolving emissions standards.

"Master Auto Care made my Clean Truck Check super easy. The staff is knowledgeable, and they got me in and out quickly. Definitely coming back!"
-Carlos R.


"Master Auto Care made my Clean Truck Check super easy. The staff is knowledgeable, and they got me in and out quickly. Definitely coming back!"
- James P.


''Great experience! They explained everything I needed to do and made sure my truck was compliant. Friendly staff and fast service.''
-Luis G.


We’re available by phone: (909) 493-1855
Email: [email protected]
Opening Hours: Mon - Fri: 9:00 AM - 5:00 PM