Clean Truck Check at the yard.

I test heavy-duty trucks for California’s Clean Truck Check. Semi-annual smoke opacity for older diesel, and OBD scans with a CARB-certified device. Passing results go in through CTC-VIS.

Based in Grass Valley, California. Fleet yards in the foothills. Sacramento off-peak by arrangement.

Email comes first. I confirm the visit. This is not a same-day shop and not a 40-hour counter.

CARB credential number: added by Bodhi.