Axxess GMOS-LAN-03 LAN OnStar Interface for Non-Amplified Systems Lets you install an aftermarket receiver in select late model GM vehicles without losing the door chime, audible safety warnings, and the ONSTAR system GM non - amplified interface harness For 2006-07 Chevy HHR, Pontiac Solstice, Saturn Sky with non-amplified audio systems Navigation outputs now included Retains Onstar with adjustable volume output-Retains chimes with adjustable level output-Retains RAP feature-Output for audible turn signal sound