---
title: "Andrew Cumpton — Clean Truck Check, Red Bluff, CA"
description: "Andrew Cumpton in Red Bluff, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome…"
url: "https://ctcfinder.com/tester/andrew-cumpton-red-bluff/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Andrew Cumpton

Clean Truck Check tester in Red Bluff, CA (Tehama County).

> 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.

| Field | Value |
|---|---|
| Location | Red Bluff, CA 96080 |
| County | Tehama County |
| Phone | (530) 363-3438 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Andrew Cumpton can test

| Your vehicle | Test required | This tester |
|---|---|---|
| Diesel, model year 2013 or newer | OBD scan | Yes |
| Alternative fuel (natural gas, propane), 2018 or newer | OBD scan | Yes |
| Diesel, model year 2012 or older (no OBD) | Smoke opacity test (SAE J1667) plus visual inspection | Yes |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

## Clean Truck Check testers in Tehama County

Andrew Cumpton is one of 11 testing businesses in Tehama County on CARB's public tester list. 7 of them offer mobile testing and 6 do smoke opacity tests. In Red Bluff itself there are 6 listed businesses, 4 of them mobile.

## When your truck is due

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/). You can test up to 90 days before a deadline. Free email reminders: https://ctcfinder.com/reminders/

## Frequently asked questions

### Does Andrew Cumpton offer mobile Clean Truck Check testing?

Yes. Andrew Cumpton says on CARB's tester list that it offers mobile testing, so it can come to your yard or job site. Ask about a trip fee when you call.

### Can Andrew Cumpton test a 2012 or older diesel truck?

Yes. Andrew Cumpton lists smoke opacity testing, the test CARB requires for diesel trucks of model year 2012 and older (no OBD). See [OBD vs smoke opacity](https://ctcfinder.com/guide/obd-vs-smoke-opacity-test/).

### How much does Andrew Cumpton charge for a Clean Truck Check?

Andrew Cumpton has not published prices with us; call (530) 363-3438 for a quote. Published California prices are usually $50–$135 per vehicle for an OBD test and $190–$200 for a smoke opacity test, plus CARB's annual fee ($32.13 in 2026). See the [cost guide](https://ctcfinder.com/guide/cost/).

### Is Andrew Cumpton a CARB-credentialed tester?

Andrew Cumpton appears on CARB's public Clean Truck Check tester list, last checked November 1, 2026. Only credentialed testers can submit results to CARB; after the test, confirm the passing result shows for your vehicle in CTC-VIS.

## Other testers nearby

- **[A&J Fleet Services](https://ctcfinder.com/tester/a-and-j-fleet-services-red-bluff/)** — 332 Pine St, Red Bluff, CA 96080 — (530) 737-8037 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Bens Truck & Repair](https://ctcfinder.com/tester/bens-truck-and-repair-red-bluff/)** — 2060 Montgomery Rd, Red Bluff, CA 96080 — (530) 526-3189 — 1 mi. Services: OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Bobs tire center](https://ctcfinder.com/tester/bobs-tire-center-red-bluff/)** — 614 Walnut St, Red Bluff, CA 96080 — (530) 529-1612 — 1 mi. Services: OBD testing, motorhome testing.
- **[Industrial Technologies LLC](https://ctcfinder.com/tester/industrial-technologies-llc-red-bluff/)** — 859 Washington street # 243, Red Bluff, CA 96080 — (530) 736-3746 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[JBCT Solutions LLC](https://ctcfinder.com/tester/jbct-solutions-llc-red-bluff/)** — 22165 S Wallen Rd, Red Bluff, CA 96080 — (530) 200-3034 — 1 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[LESLIE harris](https://ctcfinder.com/tester/leslie-harris-cottonwood/)** — Cottonwood, CA 96022 — (530) 945-2462 — 12 mi. Services: mobile testing, OBD testing, motorhome testing.