Bulletin No.: PIT5966C
Published date: 10/4/2023

Preliminary Information
PIT5966C OTA Failure or Download Will Not Complete / No Crank /
Dead Battery
Models
Brand:
All

Model:
All

Model Years:
2021 - 2024

VIN:
from
All

Engine:

to
All

All

Transmissions:
All

Involved Region or Country North America
Some customers may comment on any of the following complaints after an Over
The Air (OTA) update:

Condition

- The radio will remain on for up to 11 minutes after RAP is canceled.
- No Crank due to a dead battery. Vehicle will start and run after the battery is
charged.
- Intermittently at start up the radio display may momentarily display "Important
Update ...... Download Resuming". Example shown below (1).
- When checking the Vehicle Update screen, it will show OTA failure, or an
OTA available that will not complete. Examples shown below (2 and 3).
NOTE: These messages will indicate which OTA is being
downloaded examples: N222379480, N22236683, N222386380, N22236410,
N22236365, N222382220. Not all OTA campaign numbers will show up in Global
Warranty under Required Field Actions.

Cause

The cause of these concerns could be an OTA is stuck in a pending or download
state.

Correction:
If you have a vehicle that has these symptoms, please perform the following to reset the OTA and clear the
messages:
1. Verify the battery status and if it is low or dead, then disconnect and charge the vehicle battery by accessing
the connections in the Figure below (If the IBS sensor is disconnected from the battery a 4+ hr IBS relearn
will need to be performed). Then t est for a good battery and con rm the vehicle will start and run.

NOTE: When connecting the negative battery charger lead, use a solid engine ground or the ground stud in the
engine compartment that is connected directly to the battery negative cable/terminal/post. Do NOT connect the
battery charger lead directly to the negative battery post.
NOTE: Ultium High V oltage “ Battery Negative Cable Disconnection and Connection”
see Service Information procedure.
NOTE: Battery State of Charge SOC must be above 70% for the OTA to prompt the install button. If you receive a
"Conditions Not Ideal" or "Condtions Not Met" message, please refer to SI for Battery SOC% relearn process.
2. Go into vehicle settings and verify under "Vehicle Updates" that it shows an OTA available. Record the
campaign number that is shown.
NOTE: If the vehicle does not power up or start once the battery is charged, then this procedure does not apply
and perform normal SI Diagnostics.
3. Move the vehicle to a location that has a known good cellular connection. Then turn the ignition o , exit the
vehicle with the key/fob, close all doors and lock the vehicle.
4. Contact TAC by creating a DCM case and reference this PI number PIT5966 in the TAC case along with any
other pertinent information including the previously recorded campaign number. For Canadian dealerships,
please call TAC to create a case for assistance.
5. TAC will send your VIN to engineering to have an OTA refresh performed. TAC will send a con rmation
message back indicating the refresh has been requested.
6. Once the con rmation message has been received back from TAC, allow the vehicle to remain undisturbed
until a refresh complete con rmation is received from GM TAC. This may take up to 2 business hours.
7. After receiving con rmation that the OTA refresh has successfully completed, start the vehicle and go into
vehicle settings and go into the "Vehicle Update" Tab and select any OTA's that come up as available, examples
shown below (4). NOTE: This is only an example showing your software is up to date and the version or dates will
vary.
In some cases there will be an OTA to accept and when selected it may just clear from the vehicle as the update
was previously installed.
8. Next, con rm there are no excessive parasitic battery draws.
9. If no further issues are found, then before releasing the vehicle back to the customer, complete any open
safety recalls.

Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following
labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage
information.
Labor Operation
*3487878

Description
Clear OTA Update Message
* This is a unique labor operation for bulletin use only.

Version History
Version

Modi ed

4
12/22/2022 - Created on.
01/13/2023 - Update to the Warranty Section
06/14/2023 - Update to cover all OTA failures
10/02/2023 - Updated OTA Handling process

© 2023 General Motors. All Rights Reserved.

Labor Time
.6 Hr.