I just purchased my Ipod cable for the D3 unit and only the right side speakers work have no clue why this is happending also my video option doesn't work would it be the unit or the cable itself everyhting else works the dvd and the radio also evertime i change the song it makes a loud clicking noise outta the left side speakers any help would be great. it's installed in a 2005 GMC sierra with the onstar and bose but i bought the harness so i'm clueless at whats going on.

Where did you buy the cable?

I purchased the cable online came from overseas somwhere i'm in USA so would that be the problem? i'm also missing the GPS antenna i really don't need GPS but that seems the only way to set the clock is there another way to set the clock? and would just purchasing one of those cheapie ones do the job i'm lookin for? thanks again

Spend the money and get the right antenna. Going cheap is just likely to get you into more trouble.