not so much. someone explained it on G6P once and it is not that same at all. ill find it someday.
EDIT: found it.
No G6 has VTEC, ever... or any GM for that matter.
http://en.wikipedia.org/wiki/VTEC
Variable Valve Timing (VVT), yes... Valve LIFT... no
Two Cam profiles for valves using a third lobe and a third rocker arm . Thats VTEC at its core. Honda slaps "VTEC" on just about everything now, even there vans. It's a widely used term now for many of there technology.
Not defending Honda's either... just like to see things right.