Call 916-890-4427 if you're a diesel truck owner or fleet operator in Modesto, Turlock, or any nearby city in California’s Central Valley, NorCalCARBMobile.com is your trusted partner for CARB Clean Truck Check compliance. As credentialed mobile inspectors, we bring the inspection to your jobsite, truck yard, home, office, or even truck stop — saving you time and helping you stay 100% compliant with California law.

Mobile Clean Truck Check Testing in the Central Valley

We proudly serve diesel truck owners in:

Modesto
Turlock
Ceres
Riverbank
Oakdale
Hughson
Patterson
Livingston
Merced
Escalon
Waterford
Salida
Manteca
Ripon
Keyes
Delhi
Denair
And surrounding areas within a 35-mile radius of Modesto

If you're located anywhere between Stockton and Merced, we've got you covered.

We Come to You – 7 Days a Week if Needed

Our mobile team is fully certified by the California Air Resources Board (CARB) and can perform Clean Truck Check (formerly Periodic Smoke Inspection Program) services on-site. Whether your vehicle is parked at your business, your house, or roadside during downtime, we make it convenient for you. No shop visit required.

We Keep You on Schedule — So You Never Miss a Deadline

Once you become a NorCal CARB Mobile customer, we’ll automatically schedule you for biannual compliance checks and reach out every 6 months. As CARB regulations evolve, such as the expected quarterly testing requirement in 2027, we’ll keep you informed and compliant without you having to lift a finger.

Customer Rewards & Referral Program

We appreciate our customers! That’s why we offer:

A $10 digital gift card for every new client you refer who completes and pays for service
Entry into our monthly Yeti Mug raffle just for being a customer