Hi i have 2008 silverado Ltz with a 6cd bose system , I have a navagation radio #15940102 with rear dvd player and gps antenna i would like to install . I would like to know if need any other wiring or does my truck have all i need . I read about a vss harness is this somthing i need also.
Thank you

 

this thread should answer all your questions. Its in the tahoe section, but everything is the same for the silverado


https://chevroletforum.com/m_5604/tm.htm