?? i think you have some Mis-info on that one. With the correct VIN of a car that has the option the BCM can be programmed with the Tech 2.
Futhermore GM Sells a Accessory Remote start kit for the 2006-2008 Grand Prix.
Pontiac Grand Prix Remote Start
By pressing a button on the key fob, the remote start system starts your parked vehicle. Great for pre-warming or pre-cooling your vehicle. Seamlessly integrated with your vehicle's anti-theft and remote keyless entry systems.
OEM GM Part Number: 17800737
Details: Factory Remote Start - For Use on Vehicles with Extended Range Remote Lock Control (AP8), Includes 2 Fobs