Since my 2014 doesn't have Carplay, I ordered a reprogrammed HMI and ACI which would provide Apple Carplay or Android Play capabilities as the 2016 C7s have.
So, I am prepared for the new units to come in the mail by getting the current one ready for removal ahead of time. This will allow me to mirror my phone and use other apps such as WAZE and show on the Infotainment Screen.
The driver side is easy peasy but the passenger side was challenging because it is housed in a plastic covering and one video shows you pushing the unit out of clips with your thumb.
The other video shows that didn't work for one person and they ended up breaking the plastic cover by pulling on it but it actually made the remove much easier per his comments.
In my case, note that it is very tight and awkward position working underneath there and dislodging the unit just wasn't budging after about an hour of trying so I grabbed a dremel tool and cut out a square (red arrows) of the plastic cover and was able to slide the unit out. Install should only take 30 minutes to put things back together once units arrives.