---
title: "Sierra Diesel — Clean Truck Check, Garden Valley, CA"
description: "Sierra Diesel in Garden Valley, CA is on CARB's Clean Truck Check tester list. Offers mobile testing, OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/sierra-diesel-garden-valley/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Sierra Diesel

Clean Truck Check tester in Garden Valley, CA (El Dorado 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 | 5566 Rainier Dr, Garden Valley, CA 95633 |
| County | El Dorado County |
| Phone | (530) 392-0913 |
| Mobile testing | Yes |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Sierra Diesel 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 | Not listed |

For a 2012 or older diesel, the nearest listed tester with smoke opacity testing is clean Burn Mobile diesel emission testing in Placerville, about 8 miles away. [See listing](https://ctcfinder.com/tester/clean-burn-mobile-diesel-emission-testing-placerville/).

## Clean Truck Check testers in El Dorado County

Sierra Diesel is one of 16 testing businesses in El Dorado County on CARB's public tester list. 16 of them offer mobile testing and 7 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 Sierra Diesel offer mobile Clean Truck Check testing?

Yes. Sierra Diesel 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 Sierra Diesel test a 2012 or older diesel truck?

Sierra Diesel does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [clean Burn Mobile diesel emission testing](https://ctcfinder.com/tester/clean-burn-mobile-diesel-emission-testing-placerville/) (about 8 miles). Trucks from 2013 on get an OBD scan instead.

### How much does Sierra Diesel charge for a Clean Truck Check?

Sierra Diesel has not published prices with us; call (530) 392-0913 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 Sierra Diesel a CARB-credentialed tester?

Sierra Diesel 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

- **[EZ Smog & Repair](https://ctcfinder.com/tester/ez-smog-and-repair-el-dorado/)** — 4504 Missouri Flat Rd, El Dorado, CA 95667 — (530) 626-4211 — 8 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[clean Burn Mobile diesel emission testing](https://ctcfinder.com/tester/clean-burn-mobile-diesel-emission-testing-placerville/)** — 3370 Texas Hill Rd, Placerville, CA 95667 — (530) 417-2964 — 8 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Nazar Fatnik](https://ctcfinder.com/tester/nazar-fatnik-placerville/)** — Placerville, CA 95667 — (916) 767-5245 — 8 mi. Services: mobile testing, OBD testing.
- **[Smog Ace](https://ctcfinder.com/tester/smog-ace-placerville/)** — 615 Placerville Dr, Placerville, CA 95667 — (916) 719-7664 — 8 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[EZE Testing Services](https://ctcfinder.com/tester/eze-testing-services-cool/)** — 4209 Cherry Acres Cir, Cool, CA 95614 — (530) 350-0467 — 9 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[HFW](https://ctcfinder.com/tester/hfw-diamond-springs/)** — 6069 Enterprise Dr, Diamond Springs, CA 95619 — (530) 556-5494 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing.