--- title: "Clean Truck Check Testers in Norco, CA (8 listed)" description: "Find 8 CARB-credentialed Clean Truck Check testers in Norco, Riverside County: 6 offer mobile testing, 2 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/riverside-county/norco/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Norco, CA 8 testing businesses in Norco (Riverside County) are on CARB's public Clean Truck Check tester list (9 credentialed testers). 6 offer mobile testing, 2 do smoke opacity tests, 5 test motorhomes. > 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. ## Testers in Norco - **[Green Smog Check](https://ctcfinder.com/tester/green-smog-check-norco/)** — 2126 Hamner Ave, Norco, CA 92860 — (951) 272-3300. Services: OBD testing. - **[American Trucking Compliance LLC](https://ctcfinder.com/tester/american-trucking-compliance-llc-norco/)** — 1546 Bodie Pl, Norco, CA 92860 — (619) 736-4099. 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. 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. Services: mobile testing, OBD testing. - **[Martin Alvarez](https://ctcfinder.com/tester/martin-alvarez-norco/)** — Norco, CA 92860 — (626) 993-5791. Services: mobile testing, OBD testing, motorhome testing. - **[Nicole Gosselin](https://ctcfinder.com/tester/nicole-gosselin-norco/)** — Norco, CA 92860 — (760) 954-1167. 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. Services: mobile testing, OBD testing, motorhome testing. - **[Redline Concrete Pumping](https://ctcfinder.com/tester/redline-concrete-pumping-norco/)** — Norco, CA 92860 — (949) 244-4496. Services: mobile testing, OBD testing. ## More testers within 20 miles - **[Mi Casita Smog Check](https://ctcfinder.com/tester/mi-casita-smog-check-riverside/)** — 11061 Whitford Ave, Riverside, CA 92505 — (951) 425-3213 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Michael Estabrook](https://ctcfinder.com/tester/michael-estabrook-riverside/)** — Riverside, CA 92505 — (562) 900-2708 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Oscar Altamirano Jr](https://ctcfinder.com/tester/oscar-altamirano-jr-riverside/)** — Riverside, CA 92505 — (909) 533-1933 — 3 mi. Services: mobile testing, OBD testing. - **[Pierce Smog Test Only](https://ctcfinder.com/tester/pierce-smog-test-only-riverside/)** — 10941 Hole Ave, Riverside, CA 92505 — (714) 261-7241 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Quality in Load](https://ctcfinder.com/tester/quality-in-load-riverside/)** — Riverside, CA 92505 — (951) 220-4416 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[The Garage](https://ctcfinder.com/tester/the-garage-riverside/)** — 5814 Tahoma Pl, Riverside, CA 92505 — (951) 347-5467 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Diesel Smog Check](https://ctcfinder.com/tester/diesel-smog-check-corona/)** — Corona, CA 92879 — (951) 953-1892 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Exhaust Emission Reduction Specialists (Eers)](https://ctcfinder.com/tester/exhaust-emission-reduction-specialists-eers-corona/)** — 301 Blaine St, Corona, CA 92879 — (951) 734-3400 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[P&M Mobile Diesel Service](https://ctcfinder.com/tester/p-and-m-mobile-diesel-service-corona/)** — 420 McKinley St 111-399, Corona, CA 92879 — (909) 519-2612 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[PCM Services](https://ctcfinder.com/tester/pcm-services-corona/)** — 211 Granite St Suite J, Corona, CA 92879 — (714) 743-7000 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[T@T Auto Air](https://ctcfinder.com/tester/t-t-auto-air-corona/)** — 3001 Hampshire Cir, Corona, CA 92879 — (951) 833-6075 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Aihua SUN](https://ctcfinder.com/tester/aihua-sun-eastvale/)** — Eastvale, CA 92880 — (909) 816-4640 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## Trucking in Norco Riverside County includes the western Inland Empire logistics corridor (Riverside, Jurupa Valley, Moreno Valley, Perris) and the Coachella Valley. The Inland Empire holds roughly a billion square feet of warehouse space (Pitzer College estimate), so local fleets and owner-operators run a high volume of tests. Mobile testers who visit distribution centers and truck yards are common here. ## Cost Typical published prices in California: OBD test $50–$135 per vehicle; smoke opacity test $190–$200. Prices are set by each tester. ## Frequently asked questions ### How many Clean Truck Check testers are in Norco? CTC Finder lists 8 testing businesses in Norco from CARB's public tester list (9 credentialed testers), last checked November 1, 2026. Listing on CARB's list is optional, so the real number can be higher. ### Is there mobile Clean Truck Check testing in Norco? Yes. 6 listed businesses in Norco offer mobile testing, which means the tester comes to your yard. Use the Mobile filter above to see them. ### How much does a Clean Truck Check test cost in Norco? Testers set their own prices. Published prices for an OBD test are usually $50–$135 per vehicle; smoke opacity tests for older trucks often cost more, and mobile testers may add a trip fee. See the [cost guide](https://ctcfinder.com/guide/cost/). ### How often does my truck need a Clean Truck Check test? 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/). ## Nearby cities - [Eastvale](https://ctcfinder.com/testers/riverside-county/eastvale/) — 8 listings, 3 mi - [Corona](https://ctcfinder.com/testers/riverside-county/corona/) — 18 listings, 6 mi - [Jurupa Valley](https://ctcfinder.com/testers/riverside-county/jurupa-valley/) — 18 listings, 8 mi - [Riverside](https://ctcfinder.com/testers/riverside-county/riverside/) — 48 listings, 9 mi - [Chino](https://ctcfinder.com/testers/san-bernardino-county/chino/) — 9 listings, 9 mi - [Ontario](https://ctcfinder.com/testers/san-bernardino-county/ontario/) — 31 listings, 10 mi - [Fontana](https://ctcfinder.com/testers/san-bernardino-county/fontana/) — 49 listings, 12 mi - [Bloomington](https://ctcfinder.com/testers/san-bernardino-county/bloomington/) — 8 listings, 13 mi - [Yorba Linda](https://ctcfinder.com/testers/orange-county/yorba-linda/) — 4 listings, 13 mi - [Montclair](https://ctcfinder.com/testers/san-bernardino-county/montclair/) — 3 listings, 13 mi