---
title: "DGT — Clean Truck Check, Dunnigan, CA | CTC Finder"
description: "DGT in Dunnigan, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, motorhome testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/dgt-dunnigan/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# DGT

Clean Truck Check tester in Dunnigan, CA (Yolo 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 | Dunnigan, CA 95937 |
| County | Yolo County |
| Phone | (530) 304-7280 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks DGT 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 | Not listed |
| California-registered motorhome | Same test as above by engine year, once a year | Yes |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is Perez Bros Diesel Repair in Zamora, about 7 miles away. [See listing](https://ctcfinder.com/tester/perez-bros-diesel-repair-zamora/).

## Clean Truck Check testers in Yolo County

DGT is one of 42 testing businesses in Yolo County on CARB's public tester list. 36 of them offer mobile testing and 23 do smoke opacity tests.

## 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 DGT offer mobile Clean Truck Check testing?

Yes. DGT 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 DGT test a 2012 or older diesel truck?

DGT does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [Perez Bros Diesel Repair](https://ctcfinder.com/tester/perez-bros-diesel-repair-zamora/) (about 7 miles). Trucks from 2013 on get an OBD scan instead.

### How much does DGT charge for a Clean Truck Check?

DGT has not published prices with us; call (530) 304-7280 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 DGT a CARB-credentialed tester?

DGT 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

- **[Perez Bros Diesel Repair](https://ctcfinder.com/tester/perez-bros-diesel-repair-zamora/)** — 9720 County Road 99w, Zamora, CA 95698 — (530) 312-8314 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Corona Trucking](https://ctcfinder.com/tester/corona-trucking-arbuckle/)** — 6795 Harrington Ave, Arbuckle, CA 95912 — (530) 933-3597 — 9 mi. Services: mobile testing, OBD testing.
- **[Emmanuel Cano](https://ctcfinder.com/tester/emmanuel-cano-arbuckle/)** — Arbuckle, CA 95912 — (916) 591-1570 — 9 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Gallera Transport LLC/ Certified Tester](https://ctcfinder.com/tester/gallera-transport-llc-certified-tester-arbuckle/)** — Arbuckle, CA 95912 — (530) 220-8571 — 9 mi. Services: mobile testing, OBD testing.
- **[Willy Travis](https://ctcfinder.com/tester/willy-travis-arbuckle/)** — Arbuckle, CA 95912 — (530) 681-5054 — 9 mi. Services: mobile testing, OBD testing.
- **[Gerardo Vargas](https://ctcfinder.com/tester/gerardo-vargas-esparto/)** — Esparto, CA 95627 — (530) 402-5263 — 10 mi. Services: mobile testing, OBD testing.