The official notice
Defect
On certain vehicles, a software problem could cause the driver video display (instrument cluster) to go blank while driving. If this happens, you may not be able to see certain information about the vehicle, including the speedometer, warnings, and tell-tales. In addition, the rearview camera image may not display when the transmission is shifted into reverse.
Safety Risk
Warnings, tell-tales and gauges that don't display could increase the risk of a crash. Additionally, a rearview camera image that doesn't display could reduce a driver's ability to see behind the vehicle while backing up. This could also increase the risk of a crash.
Remedy
General Motors will notify owners by mail and send a wireless over-the-air software update to eligible vehicles to update the video display control module software. Alternatively, you may schedule an appointment to have the update performed at a GM dealership.