Axxess XSVI-9003-NAV RAP Retention Interface

T-Spec v12 Series 10' 2-Channel Audio RCA Cable w High Quality Braided Jacket

Axxess GMOS-LAN-10 Radio Replacement Interface

T-Spec v12 Series 6' 2-Channel Audio RCA Cable w High Quality Braided Jacket

Axxess LC-GMRC-LAN-03 Radio Replacement Interface GM 2006-Up Retains Chimes

Axxess GMOS-LAN-06 OnStar Retention Interface

Axxess Chime Retention Interface w Built-In Speaker

Axxess AX-ADXSVI Auto-Detect Radio Replacement Interface you need the harness.