Whats the secret to unlocking 2017+ gm tcm 8/10 speed?
#1
Whats the secret to unlocking 2017+ gm tcm 8/10 speed?
Anyone know what's all involved? you have to send in your tcm to "unlock" after spending so much on software and boxes. This is why we buy the stuff so we avoid having to "send" stuff in. Big inconvenience. Not to mention waste time waiting around