Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
HP Tuners TCM Unlock service upgrades 2017+ GM T87A 8/10‑speed TCMs to enable tuning; this is an unlock‑only option. Send in your TCM with VIN and HP Tuners will upgrade it for tuning and return it with the same programming. The service typically takes 1–3 business days (excluding shipping). If you need the TCM programmed to a different VIN, choose the Upgrade & Program option instead.
HPT 2017+ GM 8/10 Speed Auto T87A TCM Unlock Only (*Must Mail in PCM*)
