Ok been following for a while, apologizing now if it’s been cover!
I have 2014 GMC Sierra base model with the 4” screen. My truck is pre wired for backup camera. I ordered a factory 8” screen and HMI and back up camera, from the salvage yard. Main question is if it’s plug and play? Upgrading to io5 don’t need Apple car play or navigating. Just want bigger screen and touch. I got the radio in waiting on the HMI should be here tomorrow hopefully? Plugged in the new radio with out the new HMi and I get sound but no display, so when I get the new HMi will everything work?!?!!