# HPT 2017+ GM 8/10 Speed Auto T87A TCM Unlock Only (*Must Mail in PCM*)

Our upgrade-only option will upgrade your TCM to enable tuning. Send us your TCM and we'll send it back to you fully upgraded for tuning. Please include VIN. This service takes 1-3 business days to complete (not including shipping times).

-   Our upgrade-only option will upgrade your TCM to enable tuning. Send us your TCM and we'll send it back to you fully upgraded for tuning. Please include VIN. This service takes 1-3 business days to complete (not including shipping times).
-   Note: Keep in mind that with this option, your TCM will be returned to you with the same programming. If you want the TCM to be pre-programmed to a different VIN, this is not the option for you. Please select "Upgrade & Program" instead.
-   Note: No need for an IMMO Relearn, Crank Relearn, or to perform the "Replace TCM" Function in VCM Scanner on the stock TCM.

## Details

- **Price:** 302.76 CAD
- **Vendor:** HP Tuners
- **Type:** Tune Files

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 302.76 CAD | In stock |

---

> Source: [Standard Auto Part](https://www.standardautopart.com/products/hpt-2017-gm-8-10-speed-auto-t87a-tcm-unlock-only-must-mail-in-pcm)
> Updated: 2026-08-30