When replacing the OEM radio some features may be lost. This interface will retain those features and also provide Navigation outputs when aDDINg an aftermarket Navigation radio. This interface will also retain steering wheel control functions as long as the aftermarket radio is steering wheel control capable. this interface works in General Motors 2000-2013Specifications: WARNING CA Proposition 65 Yes WARNING CA Proposition 65 Message WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov Description_DES Radio Data Interface Description_EXT Radio Data Interface; With Steering Wheel Controls; Description_FAB Radio Data Interface Description_MKT When replacing the OEM radio some features may be lost. This interface will retain those features and also provide Navigation outputs when aDDINg an aftermarket Navigation radio. This interface will also retain steering wheel control functions as long as the aftermarket radio is steering wheel control capable. this interface works in General Motors 2000-2013 Description_SHO RadioModInt