A:AnswerUnfortunately, this radio replacement interface has not been confirmed in that truck. The PAC Audio LCGM51 interface will work in trucks that have a factory IO5 or IO6 radio RPO code though.
A:AnswerSpecific vehicle applications vary in feature retention, but most vehicles will continue to have a functional heads-up display on the windshield, minus any radio-derived information like station information, navigation prompts etc.
A:AnswerAs long as your vehicle is one that is a covered application, this radio replacement interface/harness will retain all those features you mention.
A:AnswerThis interface is used when replacing the factory radio with an aftermarket radio, and will not work for what you are trying to do, unfortunately.
A:AnswerUnfortunately, this radio replacement interface will not work in a 2005 Cadillac Deville. You would need an OS-2GM32X radio replacement interface for that vehicle.
A:AnswerUnfortunately, this will not work on a 2018 Cadillac XT5. Please see an associate at a local store to go over audio upgrade options for that specific vehicle.
A:AnswerDepending on the revision of the interface you are using, the volume will be adjusted in different ways. Please call our technical support team and they will walk you thru OnStar volume level adjustment based on your specific vehicle and module revision. The number is 727-592-5992.