Prestige APS 775 and GMC Sierra 2004 SLE

if ths is your first alarm and remote start combo you have ever installed this is a complicated car u chose to do.the alarm part is not to complicated and the remote start part isn't too hard either but the part that i'm a little concerned about is the passlock . I personally think it's cake but for someone with out experience it can be pretty confusing and if it's not done right u can really create some problems with your vehicle....but i do believe there is a door lock interface that also controls passlock and the factory security system via the data link connectot under your dash u can probably obtain tthis interface at bypass.com                                                           Later,AudioPro111

Anybody else? Any help provided would be appreciated Thanks,