Does anyone know whether or not the Front air deflectors that are on the i think '06 tahoes ont he bottom of the front bumper would fit on an
'02, where do you get it

 

It will fit, you will need to purchase the attaching hardware as well.
It is a bit of a PITA to mate correctly so take your time and be sure to get it secured properly, the ends are the critical areas.
A GM Dealer would be your best bet for the parts and it is not an expensive undertaking.