Hey Gang, I just bought a 2018 Silverado 1500 LTZ. Love it. However, I drove a different one before my purchase and it had a cool Speed Limit indicator next to the digital speedometer, which tells me the speed limit on the road I'm driving. (Lots of speed traps where I go, so thought it would be handy. When I got mine, I tried to turn it on and it does not appear to be available. Asked my dealer and they are stumped as to why it is not available. Is there a patch or something that is required to have this feature? Its been around since '14, so not a new feature. I looked it up on line and the GM site says (The feature requires GM's Next-Gen Infotainment (NGI) systems, which is typically assigned GM RPO code IO5 or IO6. But I can't find any reference to this either?
Thoughts?