Diagnostic Aids

WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

It is not required to download an app to your device for Apple CarPlay.
It is recommended to use the device's factory provided USB cable. Aftermarket or third - party cables may not work.
Visit for a list of Apple CarPlay compatible apps. This does not guarantee the functionality of the app.