2003 silvy audio question

[CrazyJesster]

ok in my new 03 z71 ive got the bose sound system without onstar. now my 01 didnt have the bose or anything. and i had my alpine 9887 deck intalled.

now with the bose soundsytem and all that its got the sub in the console. will i need a special harness for things to work right or would hte harness i have work.

im not sure but what i found on crutchfield it needs a special harness. that has some type of power block an stuff.