databus issue.. need help finding harness

[abrhino]

im tryin to help my friend get a new cd player in his gf's car. she got a 02 Cavalier z24.. he already got her a new pioneer cd player.. i cant find which harness we need tho. it does not have onstar or bose... i just used the walmart chime retention interface on my 03 monte, but it say 03-up and this one is an 02.. not sure if it matters, but i wanna be sure before have him waste $40

[PJK485]

It's the same thing. Have fun taking the whole top dashboard off. DO NOT TRY TO PULL THE RADIO DASH TRIM PANEL STRAIGHT OFF. There are screws on top that can only be accessed by taking the top dashboard cover off.