Quote Originally Posted by skexius View Post

Yes, option code 'K59' is for the Adaptive Cruise Control. Unfortunately, Adaptive Cruise Control and Head-Up Display were only paired together on the 2008 and up STS V8 with the 1SG package. Adaptive Cruise Control was never offered on any V6 STS of any year.

On your 2011 V6 STS, the Side Blind Zone Alert, Lane Departure Warning system, and Head-Up Display were paired together into a package called the Driver Awareness Package. It is option code 'Y53'.

Hope this explains these things for you.

Sorry, you've got it backwards. ACC & HUD were paired 2005-2007 and only available separately in later years.