--- title: "Clean Truck Check Testers in Escalon, CA (10 listed)" description: "Find 10 CARB-credentialed Clean Truck Check testers in Escalon, San Joaquin County: 10 offer mobile testing, 4 do smoke opacity tests. Phone numbers, services…" url: "https://ctcfinder.com/testers/san-joaquin-county/escalon/" updated: "2026-11-01" publisher: "CTC Finder (independent directory, not affiliated with CARB)" --- # Clean Truck Check testers in Escalon, CA 10 testing businesses in Escalon (San Joaquin County) are on CARB's public Clean Truck Check tester list (10 credentialed testers). 10 offer mobile testing, 4 do smoke opacity tests, 6 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 Escalon - **[Brazil Dairy Transport](https://ctcfinder.com/tester/brazil-dairy-transport-escalon/)** — 11535 S Henry Rd, Escalon, CA 95320 — (209) 985-2410. Services: mobile testing, OBD testing. - **[Dillon Dunson](https://ctcfinder.com/tester/dillon-dunson-escalon/)** — Escalon, CA 95320 — (209) 816-0119. Services: mobile testing, OBD testing, motorhome testing. - **[Dimas Sousa](https://ctcfinder.com/tester/dimas-sousa-escalon/)** — Escalon, CA 95320 — (209) 456-2252. Services: mobile testing, OBD testing. - **[Elias Rodriguez](https://ctcfinder.com/tester/elias-rodriguez-escalon/)** — Escalon, CA 95320 — (916) 271-1787. Services: mobile testing, OBD testing. - **[Gastelum Truck and Trailer Repair LLC](https://ctcfinder.com/tester/gastelum-truck-and-trailer-repair-llc-escalon/)** — 22323 State Highway 120, Escalon, CA 95320 — (209) 701-9838. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Hill Truck & Trailer Repair](https://ctcfinder.com/tester/hill-truck-and-trailer-repair-escalon/)** — 22044 Henry Rd, Escalon, CA 95320 — (209) 541-7079. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[J Sanchez Hauling Inc.](https://ctcfinder.com/tester/j-sanchez-hauling-inc-escalon/)** — 9733 Escalon Bellota Rd, Escalon, CA 95320 — (209) 701-8740. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing. - **[Main Street garage](https://ctcfinder.com/tester/main-street-garage-escalon/)** — 1906 Main St, Escalon, CA 95320 — (209) 804-8108. Services: mobile testing, OBD testing, motorhome testing. - **[Patrick Dunn](https://ctcfinder.com/tester/patrick-dunn-escalon/)** — Escalon, CA 95320 — (209) 996-9878. Services: mobile testing, OBD testing, motorhome testing. - **[Philip Atherton](https://ctcfinder.com/tester/philip-atherton-escalon/)** — Escalon, CA 95320 — (209) 629-6855. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. ## More testers within 20 miles - **[Freedom smog](https://ctcfinder.com/tester/freedom-smog-riverbank/)** — 2660 Patterson Rd, Riverbank, CA 95367 — (209) 622-9156 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Amanpreet Singh](https://ctcfinder.com/tester/amanpreet-singh-modesto/)** — Modesto, CA 95356 — (231) 286-0800 — 7 mi. Services: not listed. - **[Jacob Palleschi](https://ctcfinder.com/tester/jacob-palleschi-modesto/)** — Modesto, CA 95356 — (209) 596-6496 — 7 mi. Services: mobile testing, OBD testing. - **[Nicholas Cuneo](https://ctcfinder.com/tester/nicholas-cuneo-modesto/)** — Modesto, CA 95356 — (209) 518-2215 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[UPS](https://ctcfinder.com/tester/ups-modesto/)** — 3201 Nightingale Dr, Modesto, CA 95356 — (209) 324-5784 — 7 mi. Services: mobile testing, OBD testing, motorhome testing. - **[A2z Solutions INC](https://ctcfinder.com/tester/a2z-solutions-inc-ripon/)** — Ripon, CA 95366 — (209) 707-9021 — 8 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Petersen Smog & Automotive](https://ctcfinder.com/tester/petersen-smog-and-automotive-ripon/)** — 106 2nd St, Ripon, CA 95366 — (209) 505-3484 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Ripon Smog](https://ctcfinder.com/tester/ripon-smog-ripon/)** — 447 S Parallel Ave Suite 6A, Ripon, CA 95366 — (209) 637-9779 — 8 mi. Services: mobile testing, OBD testing, motorhome testing. - **[Amador Castaneda](https://ctcfinder.com/tester/amador-castaneda-salida/)** — Salida, CA 95368 — (510) 266-9595 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[The Smog GUY](https://ctcfinder.com/tester/the-smog-guy-salida/)** — 5652 Pirrone Rd, Salida, CA 95368 — (209) 812-5206 — 8 mi. Services: OBD testing, motorhome testing. - **[Adrian Diaz](https://ctcfinder.com/tester/adrian-diaz-modesto/)** — Modesto, CA 95350 — (209) 621-7691 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing. - **[Brian Padilla](https://ctcfinder.com/tester/brian-padilla-modesto/)** — Modesto, CA 95350 — (209) 918-3600 — 10 mi. Services: mobile testing, OBD testing, motorhome testing. ## Trucking in Escalon San Joaquin County (Stockton, Tracy, Manteca, Lathrop) is a major Northern California distribution-center region, with the Port of Stockton on the San Joaquin River. ## 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 Escalon? CTC Finder lists 10 testing businesses in Escalon from CARB's public tester list (10 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 Escalon? Yes. 10 listed businesses in Escalon 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 Escalon? 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 - [Ripon](https://ctcfinder.com/testers/san-joaquin-county/ripon/) — 3 listings, 8 mi - [Modesto](https://ctcfinder.com/testers/stanislaus-county/modesto/) — 23 listings, 11 mi - [Manteca](https://ctcfinder.com/testers/san-joaquin-county/manteca/) — 19 listings, 12 mi - [Oakdale](https://ctcfinder.com/testers/stanislaus-county/oakdale/) — 5 listings, 12 mi - [French Camp](https://ctcfinder.com/testers/san-joaquin-county/french-camp/) — 3 listings, 16 mi - [Lathrop](https://ctcfinder.com/testers/san-joaquin-county/lathrop/) — 5 listings, 17 mi - [Ceres](https://ctcfinder.com/testers/stanislaus-county/ceres/) — 7 listings, 18 mi - [Stockton](https://ctcfinder.com/testers/san-joaquin-county/stockton/) — 50 listings, 19 mi - [Turlock](https://ctcfinder.com/testers/stanislaus-county/turlock/) — 7 listings, 24 mi - [Lodi](https://ctcfinder.com/testers/san-joaquin-county/lodi/) — 12 listings, 24 mi