Saw this on TECHLINK. I have the bluetooth issue and my service manager is going to update mine later this week...
Blank Touch Screen after Start-up and in Reverse
January 23, 2014
The infotainment touch screen may be blank after start-up and in Reverse, a rearview camera message may be displayed, and there may be Bluetooth® and navigation system conditions on the following models equipped with radio-infotainment system RPOs IO4, IO5, IO6 or RAO (except with RPO UPF):
• 2014 Silverado 1500 built prior to October 1, 2013
• 2014 Sierra 1500 built prior to October 1, 2013
Some possible Bluetooth conditions include the screen not returning to the Home screen after ending a call, cannot call contact work/mobile number for more than one contact with the same name, and issues concerning speech recognition.
Some navigation conditions include no results found after performing an address search with an incomplete address, the selection of a Point of Interest address delivers a wrong destination position, and the map freezing when panning in the 10k zoom scale.
An updated software calibration has been released to address these conditions.