---
title: "Zoraida Sierra Baez — Clean Truck Check, Buttonwillow, CA"
description: "Zoraida Sierra Baez in Buttonwillow, CA is on CARB's Clean Truck Check tester list. Offers OBD testing. Phone, address and nearby testers."
url: "https://ctcfinder.com/tester/zoraida-sierra-baez-buttonwillow/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Zoraida Sierra Baez

Clean Truck Check tester in Buttonwillow, CA (Kern 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 | Buttonwillow, CA 93206 |
| County | Kern County |
| Phone | (661) 201-7677 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | No |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Zoraida Sierra Baez 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 BIT Compliance Assurance in Shafter, about 12 miles away. [See listing](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/).

If you need a tester at your yard, the nearest listed tester that offers mobile testing is BIT Compliance Assurance in Shafter, about 12 miles away. [See listing](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/).

## Clean Truck Check testers in Kern County

Zoraida Sierra Baez is one of 107 testing businesses in Kern County on CARB's public tester list. 89 of them offer mobile testing and 53 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 Zoraida Sierra Baez offer mobile Clean Truck Check testing?

Not according to CARB's tester list; plan to bring the truck to the tester. The nearest listed mobile tester is [BIT Compliance Assurance](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/) (about 12 miles).

### Can Zoraida Sierra Baez test a 2012 or older diesel truck?

Zoraida Sierra Baez does not list smoke opacity testing, which older non-OBD diesel trucks need. The nearest listed tester that does is [BIT Compliance Assurance](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/) (about 12 miles). Trucks from 2013 on get an OBD scan instead.

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

Zoraida Sierra Baez has not published prices with us; call (661) 201-7677 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 Zoraida Sierra Baez a CARB-credentialed tester?

Zoraida Sierra Baez 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

- **[BIT Compliance Assurance](https://ctcfinder.com/tester/bit-compliance-assurance-shafter/)** — 3308 Trail River Ln, Shafter, CA 93263 — (661) 742-7827 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[On Site Clean Truck Check Carb Testing](https://ctcfinder.com/tester/on-site-clean-truck-check-carb-testing-shafter/)** — 262 Rodriguez Ave, Shafter, CA 93263 — (661) 910-2585 — 12 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Perez Trans LLC.](https://ctcfinder.com/tester/perez-trans-llc-shafter/)** — 551 Drake Dr, Shafter, CA 93263 — (661) 978-1588 — 12 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Spencers Mobile Clean Truck Check llc](https://ctcfinder.com/tester/spencers-mobile-clean-truck-check-llc-shafter/)** — 214 Walnut St, Shafter, CA 93263 — (661) 581-5355 — 12 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Cal Testing Services Inc](https://ctcfinder.com/tester/cal-testing-services-inc-bakersfield/)** — 17306 Landeron Ct, Bakersfield, CA 93314 — (559) 259-7884 — 14 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[John Reichenberg](https://ctcfinder.com/tester/john-reichenberg-bakersfield/)** — Bakersfield, CA 93314 — (661) 820-2679 — 14 mi. Services: mobile testing, OBD testing, motorhome testing.