--- title: "Clean Truck Check Testers in Gridley, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Gridley, Butte County: 3 offer mobile testing, 0 do smoke opacity tests. Phone numbers, services and…" url: "https://ctcfinder.com/testers/butte-county/gridley/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Gridley, CA 3 testing businesses in Gridley (Butte County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 3 offer mobile testing, 0 do smoke opacity tests, 2 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 Gridley - **[Dans Diesel Performance](https://ctcfinder.com/tester/dans-diesel-performance-gridley/)** — 1825 Ringnecked Pheasant Ct, Gridley, CA 95948 — (530) 720-9349. Services: mobile testing, OBD testing. - **[Gridley Country Ford](https://ctcfinder.com/tester/gridley-country-ford-gridley/)** — Gridley, CA 95948 — (530) 961-2968. Services: mobile testing, OBD testing, motorhome testing. - **[Gridley Ford](https://ctcfinder.com/tester/gridley-ford-gridley/)** — Gridley, CA 95948 — (530) 403-3385. Services: mobile testing, OBD testing, motorhome testing. ## More testers within 20 miles - **[Dalpreet Kullar](https://ctcfinder.com/tester/dalpreet-kullar-live-oak/)** — Live Oak, CA 95953 — (530) 790-8998 — 6 mi. Services: mobile testing, OBD testing. - **[Harold Greenberg](https://ctcfinder.com/tester/harold-greenberg-biggs/)** — Biggs, CA 95917 — (916) 917-8496 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Mechanic Works](https://ctcfinder.com/tester/mechanic-works-biggs/)** — 2936 2nd St, Biggs, CA 95917 — (530) 237-4417 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Registration Regulations and applications](https://ctcfinder.com/tester/registration-regulations-and-applications-biggs/)** — 2542 Highway 99, Biggs, CA 95917 — (530) 570-3229 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Top Quality Diesel Repair](https://ctcfinder.com/tester/top-quality-diesel-repair-biggs/)** — 497 C St, Biggs, CA 95917 — (530) 510-7550 — 7 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[North State Emissions Testing](https://ctcfinder.com/tester/north-state-emissions-testing-colusa/)** — 3145 Wilson Ave, Colusa, CA 95932 — (530) 501-0865 — 14 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Slow Rollin Inc](https://ctcfinder.com/tester/slow-rollin-inc-colusa/)** — 51 Birchwood Pl, Colusa, CA 95932 — (530) 870-1935 — 14 mi. Services: mobile testing, OBD testing. - **[Chandler Hansis](https://ctcfinder.com/tester/chandler-hansis-marysville/)** — Marysville, CA 95901 — (530) 774-8041 — 17 mi. Services: not listed. - **[Sierra Diesel Parts and Services, Inc.](https://ctcfinder.com/tester/sierra-diesel-parts-and-services-inc-marysville/)** — 4121 State Highway 20, Marysville, CA 95901 — (530) 913-1660 — 17 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Steven Royal](https://ctcfinder.com/tester/steven-royal-marysville/)** — Marysville, CA 95901 — (949) 257-8542 — 17 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Pape Kenworth Durham](https://ctcfinder.com/tester/pape-kenworth-durham-durham/)** — Durham, CA 95938 — (530) 893-8617 — 18 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Amritpal Singh](https://ctcfinder.com/tester/amritpal-singh-yuba-city/)** — Yuba City, CA 95993 — (530) 301-3397 — 18 mi. Services: mobile testing, OBD testing. ## 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 Gridley? CTC Finder lists 3 testing businesses in Gridley from CARB's public tester list (3 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 Gridley? Yes. 3 listed businesses in Gridley 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 Gridley? 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 - [Biggs](https://ctcfinder.com/testers/butte-county/biggs/) — 4 listings, 7 mi - [Marysville](https://ctcfinder.com/testers/yuba-county/marysville/) — 3 listings, 17 mi - [Oroville](https://ctcfinder.com/testers/butte-county/oroville/) — 4 listings, 20 mi - [Yuba City](https://ctcfinder.com/testers/sutter-county/yuba-city/) — 11 listings, 22 mi - [Chico](https://ctcfinder.com/testers/butte-county/chico/) — 10 listings, 27 mi - [Arbuckle](https://ctcfinder.com/testers/colusa-county/arbuckle/) — 4 listings, 29 mi - [Lincoln](https://ctcfinder.com/testers/placer-county/lincoln/) — 4 listings, 38 mi