Purely hypothetical question here as neither of my trucks have Passlock... Recent issues with my Impala have just got me wondering. Is it possible to remove Passlock functionality on these trucks by simply having it tuned out of the PCM by someone like Black Bear? Or is it more complex than that? What got me wondering is the system from NewRockies Inc designed to disable all GM anti-theft systems. It's like $350 for that kit. Seems a PCM tune would be a much cheaper solution if it works.