Audio Systems: upgrading sound system, bells and whistles, chevrolet vehicles

Question
Hello,I have a 2004 Silverado with the bose package (no DVD or XM). the question is that I wouls like to install a Sony AM/FM/CD player, along with a amp and sub. I want to use the existing speakers. is this posible and what compontents would I need to buy, minus the radio,amp & sub? next question is will I lose what features(chimes, bells and whistles)? Thank You.

Answer
if you do it right everything will work

XR4
will seamlessly integrate new receivers or CD players into 2005 and older General Motors vehicles equipped with Bose audio systems.  universal leads allow you to use factory match connectors,

GMCHIME reintroduces the chime function in  many 2003 and newer General Motors vehicles which route the factory chimes through the factory radio. GMCHIME also includes a RAP (Retained Accessory Power) ignitio...
#GMCHIME

REMPIOGM steering wheel control interface lets you control a Pioneer or Sony source unit, from the steering-wheel-mounted audio controls on many Chevrolet vehicles. All of the programming for the Chevrolet vehicles,
#REMPIOGM


XR4 AND  GMCHIME are important i don't know if you want to use the stering controls  
the best place to find the interface is

oemautosound.com  their number is 407-933-1065  
good luck i hope this information help you