--- title: "Clean Truck Check Testers in Valley Springs, CA (3 listed)" description: "Find 3 CARB-credentialed Clean Truck Check testers in Valley Springs, Calaveras County: 3 offer mobile testing, 2 do smoke opacity tests. Phone numbers…" url: "https://ctcfinder.com/testers/calaveras-county/valley-springs/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Valley Springs, CA 3 testing businesses in Valley Springs (Calaveras County) are on CARB's public Clean Truck Check tester list (3 credentialed testers). 3 offer mobile testing, 2 do smoke opacity tests, 3 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 Valley Springs - **[A&T Mobile Vin Verification](https://ctcfinder.com/tester/a-and-t-mobile-vin-verification-valley-springs/)** — Valley Springs, CA 95252 — (209) 810-2882. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Hunter Moody](https://ctcfinder.com/tester/hunter-moody-valley-springs/)** — Valley Springs, CA 95252 — (209) 217-2691. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Sierra Services](https://ctcfinder.com/tester/sierra-services-valley-springs/)** — 5010 Olive Orchard Road, Valley Springs, CA 95252 — (209) 914-0388. Services: mobile testing, OBD testing, motorhome testing. ## More testers within 20 miles - **[Johnson Enterprises](https://ctcfinder.com/tester/johnson-enterprises-san-andreas/)** — 1801 Leonard Ct, San Andreas, CA 95249 — (209) 890-0369 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Lynchsauto](https://ctcfinder.com/tester/lynchsauto-jackson/)** — 12568 Jackson Gate Rd, Jackson, CA 95642 — (209) 304-0399 — 13 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Mobile CARB Testing & Repair](https://ctcfinder.com/tester/mobile-carb-testing-and-repair-jackson/)** — 409 Anita St, Jackson, CA 95642 — (209) 256-4627 — 13 mi. Services: mobile testing, OBD testing, motorhome testing. - **[S&J Auto Service](https://ctcfinder.com/tester/s-and-j-auto-service-jackson/)** — 220 Scottsville Blvd Suite A, Jackson, CA 95642 — (209) 217-8150 — 13 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[A1clean Check](https://ctcfinder.com/tester/a1clean-check-angels-camp/)** — 10668 Oak Valley Rd, Angels Camp, CA 95222 — (209) 630-1490 — 16 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Rorys Fire Apparatus & Diesel Repair](https://ctcfinder.com/tester/rorys-fire-apparatus-and-diesel-repair-angels-camp/)** — 303 N Baker St, Angels Camp, CA 95222 — (209) 628-5674 — 16 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Wayne's](https://ctcfinder.com/tester/waynes-angels-camp/)** — Angels Camp, CA 95222 — (209) 743-8104 — 16 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Capital City Diesel Inspections- TRUCK, BUS & RV](https://ctcfinder.com/tester/capital-city-diesel-inspections-truck-bus-and-rv-lodi/)** — 2600 Reynolds Ranch Pkwy, Lodi, CA 95240 — (916) 538-7777 — 17 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Classic Heavy Equipment Service](https://ctcfinder.com/tester/classic-heavy-equipment-service-lodi/)** — 885 E Lodi Ave, Lodi, CA 95240 — (209) 400-8744 — 17 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Evolution Equipment](https://ctcfinder.com/tester/evolution-equipment-lodi/)** — 17840 N Bruella Rd, Lodi, CA 95240 — (209) 810-5796 — 17 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Express Smog](https://ctcfinder.com/tester/express-smog-lodi/)** — 320 N Cherokee Ln, Lodi, CA 95240 — (925) 875-8379 — 17 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Illest Diesel Jobs](https://ctcfinder.com/tester/illest-diesel-jobs-lodi/)** — Lodi, CA 95240 — (209) 663-8479 — 17 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 Valley Springs? CTC Finder lists 3 testing businesses in Valley Springs 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 Valley Springs? Yes. 3 listed businesses in Valley Springs 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 Valley Springs? 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 - [Jackson](https://ctcfinder.com/testers/amador-county/jackson/) — 3 listings, 13 mi - [Angels Camp](https://ctcfinder.com/testers/calaveras-county/angels-camp/) — 3 listings, 16 mi - [Lodi](https://ctcfinder.com/testers/san-joaquin-county/lodi/) — 12 listings, 20 mi - [Galt](https://ctcfinder.com/testers/sacramento-county/galt/) — 7 listings, 24 mi - [Escalon](https://ctcfinder.com/testers/san-joaquin-county/escalon/) — 10 listings, 25 mi - [Oakdale](https://ctcfinder.com/testers/stanislaus-county/oakdale/) — 5 listings, 26 mi - [Wilton](https://ctcfinder.com/testers/sacramento-county/wilton/) — 4 listings, 26 mi - [Stockton](https://ctcfinder.com/testers/san-joaquin-county/stockton/) — 50 listings, 28 mi - [Sonora](https://ctcfinder.com/testers/tuolumne-county/sonora/) — 5 listings, 29 mi - [Shingle Springs](https://ctcfinder.com/testers/el-dorado-county/shingle-springs/) — 3 listings, 31 mi