So I've seen a few posts about this on the different forums I follow & had this issue personally. Found some info to share. Basically if you remove the SD Card improperly your Navigation and possibly some USB ports my not function properly... Here's two links to the info I found. Will also post below..
https://gm-techlink.com/?p=11170
https://gm-techlink.com/?p=13677
![IMG_0656.jpg]( "IMG_0656.jpg")
An SD Card Error message may be displayed on the infotainment screen if the navigation SD card is improperly ejected from the card slot (Fig. 12) on 2020 Buick Encore, Enclave; Cadillac XT4, XT5, XT6; Chevrolet Blazer, Camaro, Silverado 1500, Silverado 2500/3500, Traverse; GMC Acadia, Sierra 1500, and Sierra 2500/3500 models equipped with Info 3.5 systems with embedded navigation (RPO IOU, IOT).
The SD card must be ejected correctly, similar to how a flash drive must be ejected properly from a computer, in order to remove the card from the card slot without affecting the performance of the navigation system.
SD Card Ejection Process
On the infotainment screen, touch the bottom of the Home page near the Notifications indicator (circled number), if available. The number indicates the number of current notifications. If there is not a notifications number shown, touch the center area of the screen, right of the Application Tray. (Fig. 13)
The Notifications page will display showing that an SD card is installed. Touch the Eject symbol. (Fig. 14)
A "Still ejecting SD card…" message will display on the screen. (Fig. 15) The card can be removed from the card slot when the "Safely Ejected" message is displayed.
If the SD card is not ejected properly, the card may not be able to be read by the navigation system the next time the system is used. If anything is being written to the card when it is removed, there is a risk that permanent data corruption may occur.
In some cases, the damage may result in the navigation system not being able to read the card or system response may be slow. It's also possible that the damage may not be evident immediately and there may be errors to only specific map data, such as the duplication of streets in particular map views. These types of errors would only be seen when driving in an area shown on the map with the affected data.
Depending on the data that is corrupt, the SD Card Error may or may not appear. Data corruption can only be repaired by replacing the SD card.
Diagnosing SD Card Errors
When diagnosing an SD card error message on a navigation system, always verify that the Read/Write switch on the side of the card is in the correct position. If the switch is in the Read-only/locked (down) position, an SD Card Error message may display. The switch needs to be placed in the Write/unlocked position (up towards the card contacts).
In addition, verify that the radio software (USB programming) is up to date and that the SD card has not been swapped from another vehicle. SD cards are VIN specific.
During diagnosis, always check for the latest bulletins and refer to the Service Information document Navigation System Malfunction (and SD Card Errors).
https://gm-techlink.com/?p=11170
https://gm-techlink.com/?p=13677
An SD Card Error message may be displayed on the infotainment screen if the navigation SD card is improperly ejected from the card slot (Fig. 12) on 2020 Buick Encore, Enclave; Cadillac XT4, XT5, XT6; Chevrolet Blazer, Camaro, Silverado 1500, Silverado 2500/3500, Traverse; GMC Acadia, Sierra 1500, and Sierra 2500/3500 models equipped with Info 3.5 systems with embedded navigation (RPO IOU, IOT).
The SD card must be ejected correctly, similar to how a flash drive must be ejected properly from a computer, in order to remove the card from the card slot without affecting the performance of the navigation system.
SD Card Ejection Process
On the infotainment screen, touch the bottom of the Home page near the Notifications indicator (circled number), if available. The number indicates the number of current notifications. If there is not a notifications number shown, touch the center area of the screen, right of the Application Tray. (Fig. 13)
The Notifications page will display showing that an SD card is installed. Touch the Eject symbol. (Fig. 14)
A "Still ejecting SD card…" message will display on the screen. (Fig. 15) The card can be removed from the card slot when the "Safely Ejected" message is displayed.
If the SD card is not ejected properly, the card may not be able to be read by the navigation system the next time the system is used. If anything is being written to the card when it is removed, there is a risk that permanent data corruption may occur.
In some cases, the damage may result in the navigation system not being able to read the card or system response may be slow. It's also possible that the damage may not be evident immediately and there may be errors to only specific map data, such as the duplication of streets in particular map views. These types of errors would only be seen when driving in an area shown on the map with the affected data.
Depending on the data that is corrupt, the SD Card Error may or may not appear. Data corruption can only be repaired by replacing the SD card.
Diagnosing SD Card Errors
When diagnosing an SD card error message on a navigation system, always verify that the Read/Write switch on the side of the card is in the correct position. If the switch is in the Read-only/locked (down) position, an SD Card Error message may display. The switch needs to be placed in the Write/unlocked position (up towards the card contacts).
In addition, verify that the radio software (USB programming) is up to date and that the SD card has not been swapped from another vehicle. SD cards are VIN specific.
During diagnosis, always check for the latest bulletins and refer to the Service Information document Navigation System Malfunction (and SD Card Errors).
