Suggested Retail:$121. PAC RP5-GM31 Radio Replacement Interface With Built-In OnStar Retention/Steering Wheel Control Retention/Navigation Outputs for Select GM LAN Vehicles. Radio Replacement Interface With Built-In OnStar Retention, Steering Wheel Control Retention and Navigation Outputs for Select GM Vehicles. Chime volume adjustment. Does not retain escalating tones of parking sensor proximity. 9 x 9 x 2 inches.. 7 DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.