01 gmc sierra aux input

could any one inform me if its possible to run audio from an aftermarket dvd player into the flat rectangular 9 pin plug in the back of a delco cd stereo   with the aux button ,  of a 2001 gmc sierra. or if there is any way to do it.

Thanks.

your talking about the Peripheal plug? 

sS

i'm talking about the flat rectangular 9 pin plug on the back of the delco cd/radio , i think its used to plug in an aux. cd player.

but there must be a way to run in just the audio from the output of an aftermarkert dvd system. 

Thanks.

but i don t understand any of that, i'm just a rookie.

i just want to know what pins of the 9 pin plug are for the audio in.

it's not a case of just knowing what pins are the actual audio path... you have to have some type of data protocol to tell the unit to open and close that audio "gate" (pathway)

I use the GMAUX-9 from Axxess (Metra) here and they work fine in this application.......

ok .very cool, now i understand.

Thanks.