PAC RP4-GM31

all-in-one Radio Replacement & Steering Wheel Control Interface; pre-loaded With Amplifier Retention & Navigation Based Output Signals; retains All Important Oem Safety & Convenience Features; data-controlled Rap Accessory Output; data-controlled Outputs For Connection To Your Navigation Radio & Speed, Reverse & E-brake Status Output Wires; keeps Vehicle Data-bus Intact For Service & Emissions Testing; retains Factory Installed Amplified Audio System; interface Can Be Quickly Updated If Needed From The Pac Website Using A Pac-up USB Adapter; for Select Gm(r) Vehicles With Can Bus; upc : 606523109147 shipping Dimensions : 6.00in X 4.00in X 1.00in estimated Shipping Weight : 0.5.