I've been told I can do a H/U swap if I buy an $80 wiring harness and mount my stock one in the trunk. Does this sound right?

TIA.

 

you can also pay a little more money an get yourself a data retention module. this saves you from having to relocate the stock deck. i just used one in my own 05 grand prix. if you looking at kits the metra one is pretty nice. works really well, cant remember the part number tho. good luck.

 

the part is called a gmco it's made by peripheral electronics

 

Found the GMCO.............thanks to you both.