Hello all I am a noob here. A couple of months ago I purchased a 2006 GMC SIERRA SLT CREW CAB 4X4 Z71 Package. The truck is fully loaded power everything, dvd and Bose sound, heated leather seats. My question is twice when I hit the unlock buttons on my standard key fob i.e. it only has lock, unlock, and panic the engine started like I had remote start. I do not have the original window sticker. What I wanted to know is how do I get to use this feature more often then getting luck with my remotes or do I need new fobs with the remote start button.