--- title: "Clean Truck Check Testers in Rocklin, CA (6 listed)" description: "Find 6 CARB-credentialed Clean Truck Check testers in Rocklin, Placer County: 6 offer mobile testing, 4 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/placer-county/rocklin/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Rocklin, CA 6 testing businesses in Rocklin (Placer County) are on CARB's public Clean Truck Check tester list (6 credentialed testers). 6 offer mobile testing, 4 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 Rocklin - **[CARB Compliance Testing](https://ctcfinder.com/tester/carb-compliance-testing-rocklin/)** — Rocklin, CA 95677 — (916) 538-7777. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[CARByourRide](https://ctcfinder.com/tester/carbyourride-rocklin/)** — 6248 Arctic Loon Way, Rocklin, CA 95765 — (209) 598-8650. Services: mobile testing, OBD testing, motorhome testing. - **[Credentialed tester in Rocklin](https://ctcfinder.com/tester/credentialed-tester-in-rocklin-rocklin/)** — 6518 Lonetree Blvd 2043, Rocklin, CA — (916) 243-5089. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Credentialed Tstr.](https://ctcfinder.com/tester/credentialed-tstr-rocklin/)** — Rocklin, CA 95765 — (916) 538-7777. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Dave's Clean Truck](https://ctcfinder.com/tester/daves-clean-truck-rocklin/)** — 4188 Lakeside Dr, Rocklin, CA 95677 — (279) 782-1851. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[J4 Clean Truck Testing](https://ctcfinder.com/tester/j4-clean-truck-testing-rocklin/)** — 5155 5th St, Rocklin, CA 95677 — (916) 365-1066. Services: mobile testing, OBD testing. ## More testers within 20 miles - **[CA Emissions Group](https://ctcfinder.com/tester/ca-emissions-group-roseville/)** — 1100 Melody Ln Ste, Roseville, CA 95678 — (916) 266-2026 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Capital City Diesel Inspections- TRUCK, BUS, RVs](https://ctcfinder.com/tester/capital-city-diesel-inspections-truck-bus-rvs-roseville/)** — 910 Pleasant Grove Blvd, Roseville, CA 95678 — (916) 538-7777 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Pete's Diesel Power LLC](https://ctcfinder.com/tester/petes-diesel-power-llc-roseville/)** — 1223 Cresthaven Dr, Roseville, CA 95678 — (916) 224-6628 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Roseville REG Srvcs](https://ctcfinder.com/tester/roseville-reg-srvcs-roseville/)** — Roseville, CA 95678 — (916) 474-5190 — 3 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mobile Diesel Emissions Testing Inc](https://ctcfinder.com/tester/mobile-diesel-emissions-testing-inc-loomis/)** — 4010 Barton Rd, Loomis, CA 95650 — (916) 530-2525 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Tony Chen- Loomis, CA credentialed tester](https://ctcfinder.com/tester/tony-chen-loomis-ca-credentialed-tester-loomis/)** — Loomis, CA 95650 — (916) 538-7777 — 4 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Trans Network](https://ctcfinder.com/tester/trans-network-roseville/)** — Roseville, CA 95661 — (916) 220-0796 — 4 mi. Services: mobile testing, OBD testing, motorhome testing. - **[carbdieseltest.com](https://ctcfinder.com/tester/carbdieseltest-com-roseville/)** — 2272 Longview Dr, Roseville, CA 95747 — (916) 538-7777 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Great Western Unlimited](https://ctcfinder.com/tester/great-western-unlimited-roseville/)** — 9616 Antelope Oaks Ct, Roseville, CA 95747 — (916) 827-5042 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mobile Clean Truck Check LLC](https://ctcfinder.com/tester/mobile-clean-truck-check-llc-roseville/)** — 301 Bayonne Ct, Roseville, CA 95747 — (916) 743-9235 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ranjeet](https://ctcfinder.com/tester/ranjeet-roseville/)** — 4032 Knobby Crest Way, Roseville, CA 95747 — (812) 581-6253 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Sebastian Fuentes Martinez](https://ctcfinder.com/tester/sebastian-fuentes-martinez-roseville/)** — Roseville, CA 95747 — (916) 410-1360 — 7 mi. Services: not listed. ## 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 Rocklin? CTC Finder lists 6 testing businesses in Rocklin from CARB's public tester list (6 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 Rocklin? Yes. 6 listed businesses in Rocklin 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 Rocklin? 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 - [Roseville](https://ctcfinder.com/testers/placer-county/roseville/) — 12 listings, 5 mi - [Citrus Heights](https://ctcfinder.com/testers/sacramento-county/citrus-heights/) — 7 listings, 8 mi - [Lincoln](https://ctcfinder.com/testers/placer-county/lincoln/) — 4 listings, 9 mi - [North Highlands](https://ctcfinder.com/testers/sacramento-county/north-highlands/) — 5 listings, 11 mi - [Folsom](https://ctcfinder.com/testers/sacramento-county/folsom/) — 5 listings, 11 mi - [Mcclellan](https://ctcfinder.com/testers/sacramento-county/mcclellan/) — 4 listings, 13 mi - [Auburn](https://ctcfinder.com/testers/placer-county/auburn/) — 7 listings, 14 mi - [Rancho Cordova](https://ctcfinder.com/testers/sacramento-county/rancho-cordova/) — 5 listings, 15 mi - [Sacramento](https://ctcfinder.com/testers/sacramento-county/sacramento/) — 68 listings, 19 mi - [Shingle Springs](https://ctcfinder.com/testers/el-dorado-county/shingle-springs/) — 3 listings, 21 mi