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OBD2 / DTC Eraser Explained: When You Need the $375 Option
Several of our newest listings — mostly GM products such as the Chevrolet Tahoe, GMC Yukon and Cadillac Escalade — offer a second drop-down on the product page: OBD2 / DTC eraser, +$375. This guide explains what it is, why only some vehicles need it, and how to decide.
What the eraser is
The eraser is a compact dongle that plugs into the vehicle’s OBD2 diagnostic port and stays there. On each ignition cycle it automatically clears specific stored diagnostic trouble codes (DTCs). It does not repair anything and it is not a general-purpose code reader; it simply removes a small set of codes that certain vehicles log while the mileage signal is being filtered.
Why some vehicles need it
Newer GM platforms cross-check the distance signal across modules. When the instrument cluster stops counting, the body-control or telematics module can log a code and, on some trims, disable convenience features until the code clears — remote start from the app, for example. The eraser keeps those features working by clearing the code before the system acts on it.
Most other vehicles — Ford, Toyota, Jeep and Ram products, for example — do not need it, so the option is only shown on the listings where it applies.
Which models offer it
At the time of writing the eraser is offered on 21 models, all in the GM family:
- Cadillac: CT5, Escalade, XT4, Lyriq, Optiq, Vistiq and Celestiq
- Chevrolet: Silverado EV, Tahoe, Suburban, Corvette C8, Blazer, Colorado, Equinox and Traverse
- GMC: Yukon 5th Gen, Hummer EV, Sierra EV, Acadia, Canyon and Terrain
Browse the full Chevrolet, GMC and Cadillac ranges to see the option on each page.
When you need it — and when you don’t
| Your situation | Eraser? |
|---|---|
| Dyno or track sessions, vehicle returns to normal use the same day | Usually optional — codes clear on their own once the device is unplugged |
| Extended testing over days or weeks, you rely on remote start / the app | Recommended |
| Fleet or development vehicle where any warning light is a problem | Recommended |
| Vehicle not in the GM list above | Not needed and not offered |
What it does not do
- It does not switch off the check-engine light for faults unrelated to the blocker.
- It does not alter any stored mileage — it only clears codes.
- It does not need coding or a subscription; it is plug and play like the blocker itself.
Pricing
The eraser is a fixed $375 on top of the blocker price, whichever model version you choose. Select “With eraser” on the product page and the headline price updates to the exact total before you add to cart.
Frequently asked questions
Can I add the eraser later?
Yes. It is a separate plug-in dongle, so you can order it on its own afterwards by contacting us with your original order number.
Does the eraser need to stay plugged in?
Yes, while the blocker is in use. It works on every ignition cycle, so it should remain in the OBD2 port for as long as the blocker is fitted.
Will it hide a genuine fault?
No. It clears only the specific codes associated with the filtered mileage signal. Unrelated faults still set codes and lights as normal.
Is there a subscription or app?
No. Like the blocker, it is plug and play with no coding, no app and no ongoing cost.
Mileage blockers sold by Mileage Blocker USA are intended for off-road, motorsport, dyno testing and vehicle-development use. They must not be used to alter the recorded mileage of a vehicle that is offered for sale. Federal law (49 U.S.C. §32703) prohibits odometer tampering with intent to defraud, and state laws add further penalties. Please make sure your use is lawful where you are.
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