08 To 11 Sierra Denali- Questions

[motobri]

Im thinking about trading my 08 to an 11 Sierra denali from in stock

Most in stock dont have rear cam=dumb orderer.

Can a factory rear camera be added easily if it hasnt built with it? wiring all there? just add handle cam? or does the wiring need to be run the whole way?

 

My 08 doesnt have active fuel man & I just upgraded wifes 07 Yuk Denali to 11 Yuk Denali and I swear it feels sluggish compared to the 07.

Doesnt seem to have the punch the 07 had and we went down from xl to shorty.

Does AFM do anything to HP or gearing?

Any other major differences in the motors/trans from 08-11?

 

Anyone else notice that cooled seats option takes away from headroom with sunroof?

Im long torso 6-4 and it really killed the headroom in the new Yuke.

 

Where did the rear seat audio controls go?

Other than addition of Btooth, coolseats, xm traffic & rear cam-any other good or bad changes?

When is bodychange due?

 

Id rather not order as the incentives are pretty good now.

 

TIA