---
title: "Clean Truck Check Testers in Siskiyou County, CA (7)"
description: "7 CARB-credentialed Clean Truck Check testers in Siskiyou County, California, across 7 cities. 6 offer mobile testing. Search by city, see phone numbers and…"
url: "https://ctcfinder.com/testers/siskiyou-county/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Clean Truck Check testers in Siskiyou County, California

7 testing businesses in 7 cities; 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.


## Dorris

- **[Outlaw Equipment Repair](https://ctcfinder.com/tester/outlaw-equipment-repair-dorris/)** — 100 S California St, Dorris, CA 96023 — (530) 215-4605. Services: mobile testing, OBD testing.

## Fort Jones

- **[Scott Valley Disposal Inc.](https://ctcfinder.com/tester/scott-valley-disposal-inc-fort-jones/)** — 11217 N State Highway 3, Fort Jones, CA 96032 — (530) 598-1188. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Hornbrook

- **[Blake Burleigh](https://ctcfinder.com/tester/blake-burleigh-hornbrook/)** — Hornbrook, CA 96044 — (530) 598-3555. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Montague

- **[MHE Parts and Repair Inc.](https://ctcfinder.com/tester/mhe-parts-and-repair-inc-montague/)** — 903 S 11th St, Montague, CA 96064 — (530) 905-0371. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Mount Shasta

- **[Skinners Truck Repair](https://ctcfinder.com/tester/skinners-truck-repair-mount-shasta/)** — 5908 Truck Village Dr, Mount Shasta, CA 96067 — (530) 925-4304. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.

## Weed

- **[Reliable Workforce Services](https://ctcfinder.com/tester/reliable-workforce-services-weed/)** — 20510 Big Springs Rd #A, Weed, CA 96094 — (530) 598-1625. Services: mobile testing, OBD testing, motorhome testing.

## Yreka

- **[A1 automotive](https://ctcfinder.com/tester/a1-automotive-yreka/)** — 201 E Oberlin Rd, Yreka, CA 96097 — (530) 340-2823. Services: mobile testing, OBD testing.


## Frequently asked questions

### How many Clean Truck Check testers are in Siskiyou County?

CTC Finder lists 7 testing businesses in Siskiyou County from CARB's public tester list (7 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 Siskiyou County?

Yes. 6 listed businesses in Siskiyou County 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 Siskiyou County?

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/).