---
title: "Korina Zimmerman — Clean Truck Check, Exeter, CA"
description: "Korina Zimmerman in Exeter, CA is on CARB's Clean Truck Check tester list. Offers OBD testing, smoke opacity (non-OBD) testing. Phone, address and nearby…"
url: "https://ctcfinder.com/tester/korina-zimmerman-exeter/"
updated: "2026-11-01"
publisher: "CTC Finder (independent directory, not affiliated with CARB)"
---

# Korina Zimmerman

Clean Truck Check tester in Exeter, CA (Tulare 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 | Exeter, CA 93221 |
| County | Tulare County |
| Phone | (559) 602-8353 |
| Mobile testing | No |
| OBD testing | Yes |
| Smoke opacity (non-OBD) | Yes |
| Motorhomes | No |
| Credentialed testers | 1 |
| Last verified | 2026-11-01 |

## Which trucks Korina Zimmerman 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 |

If you need a tester at your yard, the nearest listed tester that offers mobile testing is Nomad Diesel Repair in Exeter, about 1 mile away. [See listing](https://ctcfinder.com/tester/nomad-diesel-repair-exeter/).

## Clean Truck Check testers in Tulare County

Korina Zimmerman is one of 62 testing businesses in Tulare County on CARB's public tester list. 53 of them offer mobile testing and 31 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 Korina Zimmerman 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 [Nomad Diesel Repair](https://ctcfinder.com/tester/nomad-diesel-repair-exeter/) (about 1 mile).

### Can Korina Zimmerman test a 2012 or older diesel truck?

Yes. Korina Zimmerman 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 Korina Zimmerman charge for a Clean Truck Check?

Korina Zimmerman has not published prices with us; call (559) 602-8353 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 Korina Zimmerman a CARB-credentialed tester?

Korina Zimmerman 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

- **[Nomad Diesel Repair](https://ctcfinder.com/tester/nomad-diesel-repair-exeter/)** — 646 S Spruce Rd, Exeter, CA 93221 — (559) 730-6963 — 1 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Eduardo Cisneros](https://ctcfinder.com/tester/eduardo-cisneros-lindsay/)** — Lindsay, CA 93247 — (559) 310-2872 — 7 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Carlos Jaimes Fuentes](https://ctcfinder.com/tester/carlos-jaimes-fuentes-farmersville/)** — Farmersville, CA 93223 — (559) 667-2669 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[SAE](https://ctcfinder.com/tester/sae-farmersville/)** — 1161 N Virginia Ave, Farmersville, CA 93223 — (559) 333-4251 — 10 mi. Services: mobile testing, OBD testing, smoke opacity (non-OBD) testing, motorhome testing.
- **[Lemus truck testing](https://ctcfinder.com/tester/lemus-truck-testing-strathmore/)** — 23110 Avenue 192, Strathmore, CA 93267 — (559) 361-6658 — 11 mi. Services: mobile testing, OBD testing, motorhome testing.
- **[Samuel Aguilera](https://ctcfinder.com/tester/samuel-aguilera-strathmore/)** — Strathmore, CA 93267 — (559) 333-0375 — 11 mi. Services: mobile testing, OBD testing.