OEM 8inch Vehicle does not need Metal Decoder Box


OEM 4inch Vehicle Need to connect the Small green Square Board

https://youtu.be/COrwUf28eQY?t=343


For installation - Use the T-Harness to connect Factory Unit between Our Unit


Need to use the Mini USB Plug (LVDS Cable)


Car Type - Car Info

GM - A, C, S, X, E

ATS

GMC Sierra

Silverado

XTS

Escalade


Set Car Type to GMA 

Car Info set to Hi for 8 inch, Lo for 4 inch

Press and hold Mute button for Restart