Funny you mention this as I saw a Z71 with the Protec box just last week. I hadn't seen one in years.
I think they got rid of it because there weren't many takers, but as usual with GM it was more expensive and only offered on certain models for a short period if time, so it was destined to fail, just like Quadrasteer.
I think they got rid of it because there weren't many takers, but as usual with GM it was more expensive and only offered on certain models for a short period if time, so it was destined to fail, just like Quadrasteer.