Hope this helps anyone who needs it. I have a 2019 silverado 1500 lt. Just ripped it apart and upgraded that shitty sound system. Radio is now a pioneer 2600 nex and the interior speakers are deaf bonce Arnold's also have a 4 channel behind the seats. After 10 hours of work it's finally done. This install is a ******! No space behind the radio you have to brake the plastic housing if you want to fit anything in. Also there are vents directly behind the housing so be careful not to mess those up. You will need a bypass part ( AXDIS-GMLN31) got this part online from audio jam in DE ask for Mike ran 150. This install cannot be done without the part as none of your dash will work. Heads up part goes under the passenger side of the dash and you will have to extend the wires up to the radio as they are not long enough. Speaker portion is simple didn't run into any issues. Now with the new body update the back seat is different. Their isnt much space as the new foam cusion is broken up in sections made it hard to mount amp. So make sure your amps are smaller and will fit in the groves or you will be shaving and sanding down foam like I did.