--- title: "Green Smog Check — Clean Truck Check, Norco, CA | CTC Finder" description: "Green Smog Check in Norco, CA is on CARB's Clean Truck Check tester list with 2 credentialed testers. Offers OBD testing. Phone, address and nearby testers." url: "https://ctcfinder.com/tester/green-smog-check-norco/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Green Smog Check Clean Truck Check tester in Norco, CA (Riverside County). > CTC Finder is an independent directory, not affiliated with CARB. Tester data: CARB Clean Truck Check public tester list, last checked November 1, 2026. Confirm services, hours and prices with the tester. | Field | Value | |---|---| | Location | 2126 Hamner Ave, Norco, CA 92860 | | County | Riverside County | | Phone | (951) 272-3300 | | Mobile testing | No | | OBD testing | Yes | | Smoke opacity (non-OBD) | No | | Motorhomes | No | | Credentialed testers | 2 | | Last verified | 2026-11-01 | ## Which trucks Green Smog Check can test | Your vehicle | Test required | This tester | |---|---|---| | Diesel, model year 2013 or newer | OBD scan | Yes | | Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes | | Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Not listed | | California-registered motorhome | Same test as above by engine year, once a year | Not listed | For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Commerce Truck & Equipment Sales LLC. in Norco, about 1 mile away. [See listing](https://ctcfinder.com/tester/commerce-truck-and-equipment-sales-llc-norco/). If you need a tester at your yard, the nearest listed tester that offers mobile testing is American Trucking Compliance LLC in Norco, about 1 mile away. [See listing](https://ctcfinder.com/tester/american-trucking-compliance-llc-norco/). ## Clean Truck Check testers in Riverside County Green Smog Check is one of 251 testing businesses in Riverside County on CARB's public tester list. 233 of them offer mobile testing and 102 do smoke opacity tests. In Norco itself there are 8 listed businesses, 6 of them mobile. ## When your truck is due Most trucks test twice a year, on a schedule tied to the DMV registration expiration date. CARB says OBD trucks move to four tests a year beginning October 2027. California-registered (non-commercial) motorhomes and agricultural vehicles test once a year. See the [deadline guide](https://ctcfinder.com/guide/deadlines-2026-2027/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/ ## Frequently asked questions ### Does Green Smog Check offer mobile Clean Truck Check testing? Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [American Trucking Compliance LLC](https://ctcfinder.com/tester/american-trucking-compliance-llc-norco/) (about 1 mile). ### Can Green Smog Check test a 2012 or older diesel truck? Green Smog Check does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Commerce Truck & Equipment Sales LLC.](https://ctcfinder.com/tester/commerce-truck-and-equipment-sales-llc-norco/) (about 1 mile). Trucks from 2013 on get an OBD scan instead. ### How much does Green Smog Check charge for a Clean Truck Check? Green Smog Check has not published prices with us; call (951) 272-3300 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/). ### Is Green Smog Check a CARB-credentialed tester? Green Smog Check appears on CARB's public Clean Truck Check tester list with 2 credentialed testers, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS. ## Other testers nearby - **[American Trucking Compliance LLC](https://ctcfinder.com/tester/american-trucking-compliance-llc-norco/)** — 1546 Bodie Pl, Norco, CA 92860 — (619) 736-4099 — 1 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Commerce Truck & Equipment Sales LLC.](https://ctcfinder.com/tester/commerce-truck-and-equipment-sales-llc-norco/)** — 2231 Hamner Ave, Norco, CA 92860 — (714) 400-7579 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Daniel Cleveland](https://ctcfinder.com/tester/daniel-cleveland-norco/)** — Norco, CA 92860 — (951) 675-2879 — 1 mi. Services: mobile testing, OBD testing. - **[Martin Alvarez](https://ctcfinder.com/tester/martin-alvarez-norco/)** — Norco, CA 92860 — (626) 993-5791 — 1 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Nicole Gosselin](https://ctcfinder.com/tester/nicole-gosselin-norco/)** — Norco, CA 92860 — (760) 954-1167 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Premier Fleet Services INC](https://ctcfinder.com/tester/premier-fleet-services-inc-norco/)** — 1452 Morab Way, Norco, CA 92860 — (909) 228-6225 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.