T87A Programmed and Unlocked for HP Tuners Model_Silhouette that is done at time

that is done at time of programming

1L V8 2003-2006 GMC Yukon 4

4L V6 2003-2005 Chevrolet Monte Carlo 3

AVALANCHE 1500 10 Electronic Control Module

YOU SEND YOURS TO US

T87A Programmed and Unlocked for HP Tuners Model_Silhouette that is done at timeThis is for purchasing a T87A controller that is programmed to your VIN and unlocked for tuning with HP Tuners. If you only need the unlock service and want to send us the original unit out of your vehicle rather than purchasing one, then you want to use this service here: HP Tuners T87A Unlock Service If you want to send us a junkyard TCM, or a TCM that wasn't originally on your vehicle to have the unlock service performed, you will want to use our