OEM Integration Premium Sound System Interface - GM Class II Data Bus

Add 2-Channel Aftermarket Amplifier for GM Vehicles with Class II Data Bus Outputs are Digitally Controlled by the Headunit's Volume Knob 2 Channel RCA Outputs Left & Right Level Adjustments for Matching Amplifier/Speaker Audio Signals User Selectable to Fade Out when Adjusting Factory Radio Front/Rear Or Select to be Non-Fading Output +12-Volt Remote Turn-On Output Plug & Play, No Hard Wiring Required Vehicle Application: 2003-2004 Escalade (all), Trail Blazer LT, Trail Blazer LTZ, Envoy SLT, Sierra Denali, Yukon Denali, Hummer H2 (2003 only), 2005 Escalade (all), Sierra Denali, Yukon Denali