Testing and compliance under one roof
California's Clean Truck Check program requires periodic emissions compliance testing for heavy-duty vehicles. We are an approved facility, so you can get tested, repaired and retested in the same shop instead of bouncing between a tester and a mechanic.
- •Approved Clean Truck Check (HD I/M) testing
- •OBD data submission and smoke-opacity testing
- •Check-engine and emissions fault diagnosis
- •DPF, EGR and aftertreatment repair
- •B.I.T. inspections
- •D.O.T. inspections
- •Fleet scheduling for multiple units
- •Cummins and Caterpillar engine expertise
Built for fleets in the Inland Empire
We sit at 863 E Valley Blvd in Colton, minutes from the I-10 and I-215, which keeps downtime short for operators running out of San Bernardino, Riverside, Fontana, Rialto, Redlands, Bloomington and Ontario. Nine pull-through bays mean full-length units get in and out without a shuffle.
If you run several trucks, call and we will group your units so your compliance dates stay together instead of scattering across the year.
Common questions
- Are you an approved Clean Truck Check testing facility?
- Yes. We are an approved Clean Truck Check facility and can perform the required periodic OBD and smoke-opacity testing for heavy-duty vehicles operating in California.
- How often is Clean Truck Check testing required?
- Most heavy-duty vehicles registered in California need periodic compliance testing each year, with additional tests for some vehicle classes. We can check your vehicle's requirement and schedule you before your deadline.
- What happens if my truck fails the test?
- We diagnose and repair the underlying emissions fault in the same shop, then retest. You are not sent somewhere else to chase a check-engine light before you can be compliant.
- Do you also do B.I.T. and D.O.T. inspections?
- Yes. We handle B.I.T. and D.O.T. inspections alongside compliance testing, which lets fleets get everything done in one visit.

