2021 Corvette: Service Bulletin: #20-NA-221: Unable to Access Apps and Remote Personalization Features in the Radio - (Jun 3, 2021)
Estimated Reading Time: 3 Minutes#20-NA-221: Unable to Access Apps and Remote Personalization Features in the Radio - (Jun 3, 2021)
| Subject: | Unable to Access Apps and Remote Personalization Features in the Radio |
This bulletin replaces PIT5793A. Please discard all previous copies of PIT5793A.
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Brand: |
Model: |
Model Year: |
Breakpoint Dates: |
Engine: |
Transmission: | ||
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from |
to |
from |
to | ||||
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Chevrolet |
Corvette (Middle East) |
2021 |
2021 |
SOP |
Built prior to May 19, 2021 |
— |
— |
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Silverado 1500 |
2021 |
2021 |
Silao December 11, 2020 Fort Wayne February 13, 2021 |
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GMC |
Sierra 1500 |
2021 |
2021 |
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Involved Region or Country |
United States, Canada, Middle East |
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Additional Options (RPOs) |
Equipped with Infotainment system IOS, IOU or IOT |
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Condition |
Some customers may comment of any or all of the following symptoms:
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Cause |
The cause of the condition may be a calibration anomaly. |
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Correction |
Reprogram the A11 radio calibrations. |
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Service Procedure
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Diagnostic Aids:
If any symptom persists after completing the radio calibration update, it is possible that the customer still needs to accept Terms and Conditions (T&Cs), and/or that their password for OnStar may have expired.
- Verification of the calibration being installed can be confirmed by:
- logging into the Guest Profile and successfully installing an app in the radio.
- confirm that the OnStar accounts tab now shows accurate data.
- Contact OnStar to confirm connectivity with the vehicle and that OnStar T&Cs have been accepted by the customer.
- Inquire with the customer to ensure their OnStar, Owner Center, or myBrand password has not expired. If the customer can log into their my.chevrolet.com or my.gmc.com account, this confirms their password is not expired.
Caution: Before downloading the update files, be sure the computer is connected to the internet through a network cable (hardwired). DO NOT DOWNLOAD or install the files wirelessly. If there is an interruption during programming, programming failure or control module damage may occur.
Note: Carefully read and follow the instructions below.
- Ensure the programming tool is equipped with the latest software and is securely connected to the data link connector. If there is an interruption during programming, programming failure or control module damage may occur.
- Stable battery voltage is critical during programming. Any fluctuation, spiking, over voltage or loss of voltage will interrupt programming. Install a GM Authorized Programming Support Tool to maintain system voltage. Refer to www.gmdesolutions.com for further information. If not available, connect a fully charged 12V jumper or booster pack disconnected from the AC voltage supply. DO NOT connect a battery charger.
- Follow the on-screen prompts regarding ignition power mode, but ensure that anything that drains excessive power (exterior lights, HVAC blower motor, etc) is off.
- Please verify that the radio time and date are set correctly before inserting the USB drive into the vehicle for programming, otherwise an error will result.
- Clear DTCs after programming is complete. Clearing powertrain DTCs will set the Inspection/Maintenance (I/M) system status indicators to NO.
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Version |
3 |
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Modified |
Released December 14, 2020 February 22, 2021 – Updated Breakpoint Dates and added Diagnostic Tips to Service Procedure section. June 03, 2021 – Added the Chevrolet Corvette (Middle East only) model and updated the programming procedure in the Service Procedure section. |