Thread: Aftermarket Stereo Problems?

I have both a GMOS04 and a GMOS01.

so i need the harness from bestbuy and the gmos 4 harness or just the gmos 4 harness?

You should need both because the gmos 4 is used on multiple cars where as the grand prix's harness is much more specific. Funny thing is i work at bestbuy but i've never needed parts for the new gp since mines the 97 thru 03 model and the 04 i have i bought to sell so im not waisting time on its stereo lol. Head up to the install bay assuming your local bestbuy has one, they have multiple list's of each of the parts you would need and they're happy to sell the parts from the bay that you won't see in the regular store.