Hello! Anyone knows what my problem could be? I was trying to tune my brothers truck(03 Silverado) that he recently bought, and i was able to read the pcm and modify it, but i cant write anything into it. Anyone know what that could be? Apparently theres a programmer installed into it (a handheld maybe or something) and i was wondering if thats the problem. Maybe the programmer locked the pcm or something? When im trying to write on the pcm a window comes up and says that i have no credits to perform this action, but im sure i already used credits on that pcm.
Thanks in advance.