---
title: "Ryan's Truck Repair — Clean Truck Check, Alamo, CA"
description: "Ryan's Truck Repair in Alamo, 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/ryans-truck-repair-alamo/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Ryan's Truck Repair

Clean Truck Check tester in Alamo, CA (Contra Costa 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 | 2106 Pebble Dr, Alamo, CA 94507 |
| County | Contra Costa County |
| Phone | (650) 222-0970 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | Yes |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Ryan's Truck Repair 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 Contra Costa County

Ryan's Truck Repair is one of 61 testing businesses in Contra Costa County on CARB's public tester list. 57 of them offer mobile testing and 38 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 Ryan's Truck Repair offer mobile Clean Truck Check testing?

Yes. Ryan's Truck Repair 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 Ryan's Truck Repair test a 2012 or older diesel truck?

Yes. Ryan's Truck Repair 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 Ryan's Truck Repair charge for a Clean Truck Check?

Ryan's Truck Repair has not published prices with us; call (650) 222-0970 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 Ryan's Truck Repair a CARB-credentialed tester?

Ryan's Truck Repair 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

- **[Mobile Golden State Emissions](https://ctcfinder.com/tester/mobile-golden-state-emissions-danville/)** — 821 Orange Blossom Way, Danville, CA 94526 — (925) 818-1831 — 3 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Tri-Valley Clean Truck Check / Cal Water Trucking](https://ctcfinder.com/tester/tri-valley-clean-truck-check-cal-water-trucking-danville/)** — 35 Surrey Ct, Danville, CA 94526 — (925) 708-3099 — 3 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Bayside Mobile Mechanic Service](https://ctcfinder.com/tester/bayside-mobile-mechanic-service-concord/)** — 3160 Cowell Rd, Concord, CA 94518 — (925) 766-4292 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.
- **[NQR Mobile Service - SF Bay Area & Nor Cal](https://ctcfinder.com/tester/nqr-mobile-service-sf-bay-area-and-nor-cal-concord/)** — 2750 Cloverdale Ave SF BAY AREA & NORCAL, Concord, CA 94518 — (925) 276-2215 — 7 mi. Services: mobile testing, OBD testing.
- **[Karl Grothman](https://ctcfinder.com/tester/karl-grothman-concord/)** — Concord, CA 94521 — (925) 435-9674 — 7 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[NorCal Diesel Solutions](https://ctcfinder.com/tester/norcal-diesel-solutions-pleasant-hill/)** — 16 Dudley Ct, Pleasant Hill, CA 94523 — (925) 405-7233 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.