Mobile
We come to your yard, terminal, or job site — anywhere within our coverage area.
CARB-Certified · Mobile Service
Mobile CARB Clean Truck Check, at your yard.
We bring the shop to you. On-site heavy-duty diesel emissions testing and HD I/M compliance across Chico and 100 miles of Northern California — no downtime driving to a testing station.
Why fleets choose us
Compliance without the downtime.
Keeping California trucks on the road means staying ahead of the HD I/M rule. We make that simple.
CARB-Certified
Inspections performed by a certified HDTC technician who knows the rule inside out.
Fast turnaround
Most single-vehicle checks wrap up quickly, with results submitted to CARB for you.
Fleet-friendly
Batch multiple vehicles in one visit and keep your whole fleet compliant on schedule.
What we do
Everything the HD I/M rule requires — on site.
From OBD testing on newer diesels to Clean Truck Check testing on qualifying heavy-duty vehicles, we handle the full process and submit your results directly to CARB.
- OBD test for MY2013+ diesel engines
- Visual emissions inspection plus DPF / EGR / DEF checks
- Reporting & submission to CARB, handled for you
Where we go
Chico + 100 miles in every direction.
Based in Chico, we cover Butte County and reach across the north valley — Oroville, Paradise, Yuba City, Marysville, Willows, Orland, Corning, Red Bluff and more.
Not sure if you're in range? Reach out — if you're just outside the radius, we may still be able to help.
“I called Milan from California’s air resources board webpage and he came out immediately. It was an easy experience with great service. I called four other places and I’m glad I went with him”
Ready to check a truck — or a whole fleet?
Book an on-site Clean Truck Check and we'll come to you. Fleet scheduling and multi-vehicle visits welcome.