---
title: "GM Mobile consulting Inc — Clean Truck Check, Castaic, CA"
description: "GM Mobile consulting Inc in Castaic, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing, smoke opacity (non-OBD) testing. Phone…"
url: "https://ctcfinder.com/tester/gm-mobile-consulting-inc-castaic/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# GM Mobile consulting Inc

Clean Truck Check tester in Castaic, CA (Los Angeles 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 | 28829 Carnation Ct, Castaic, CA 91384 |
| County | Los Angeles County |
| Phone | (805) 727-6738 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks GM Mobile consulting Inc 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 | Not listed |

## Clean Truck Check testers in Los Angeles County

GM Mobile consulting Inc is one of 516 testing businesses in Los Angeles County on CARB's public tester list. 465 of them offer mobile testing and 190 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 GM Mobile consulting Inc offer mobile Clean Truck Check testing?

Yes. GM Mobile consulting Inc 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 GM Mobile consulting Inc test a 2012 or older diesel truck?

Yes. GM Mobile consulting Inc 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 GM Mobile consulting Inc charge for a Clean Truck Check?

GM Mobile consulting Inc has not published prices with us; call (805) 727-6738 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 GM Mobile consulting Inc a CARB-credentialed tester?

GM Mobile consulting Inc 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

- **[Smog To Go](https://ctcfinder.com/tester/smog-to-go-valencia/)** — 29575 Paseo Guijarro, Valencia, CA 91354 — (818) 966-1117 — 8 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[All American Mobile Repair](https://ctcfinder.com/tester/all-american-mobile-repair-valencia/)** — 24307 Magic Mountain Parkway #138, Valencia, CA 91355 — (661) 433-3808 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Marc Lamb](https://ctcfinder.com/tester/marc-lamb-valencia/)** — Valencia, CA 91355 — (805) 331-0864 — 10 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Mobile Nox Doc LLC](https://ctcfinder.com/tester/mobile-nox-doc-llc-valencia/)** — Valencia, CA 91355 — (805) 727-0920 — 10 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[ProLine Diesel Repair](https://ctcfinder.com/tester/proline-diesel-repair-valencia/)** — 27240 Turnberry Ln Suite 200, Valencia, CA 91355 — (661) 383-1945 — 10 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Chad Goertz](https://ctcfinder.com/tester/chad-goertz-santa-clarita/)** — Santa Clarita, CA 91390 — (661) 212-2026 — 11 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.