Bulletin No.: PIT5663A
Published date: N/A

Preliminary Information
PIT5663A Radio Displays Climate O Message or HVAC Popup Displays Di erent Settings
Models
Brand:

Model:

Model Years:

VIN:
from

Engine:

to

Transmissions:

Cadillac

CT6

2019

All

All

All

All

Cadillac

XT4

2019

All

All

All

All

Chevrolet

Blazer

2019

All

All

All

All

Chevrolet

Camaro

2019

All

All

All

All

Chevrolet

Colorado

2019

All

All

All

All

Chevrolet

Equinox

2019

All

All

All

All

Chevrolet

Malibu

2019

All

All

All

All

Chevrolet

Silverado 1500 (New Model)

2019

All

All

All

All

Chevrolet

Volt

2019

All

All

All

All

GMC

Canyon

2019

All

All

All

All

GMC

Sierra 1500 (New Model)

2019

All

All

All

All

GMC

Terrain

2019

All

All

All

All

Holden

Acadia

2019

All

All

All

All

Holden

Equinox

2019

All

All

All

All

Involved Region or Country:

North America

Additional RPO/s:

IOS, IOT, IOU

Condition:

At random the radio may display a pop up message “Climate O ” even though the HVAC system is fully functional.
This can be repetitive in nature. Making any change to the HVAC system will make the message disappear. The radio
may also display a HVAC popup when changing HVAC settings that does not match the selected setting (e.g. blower
speed, modes, temperature setting). The HVAC will change mode, temperature, and blower speed as commanded, but
the pop-up may not display the changes properly in the radio display.

Cause:

Software anomalies between HVAC and Radio may cause this popup to appear with incorrect or inaccurate HVAC
information.

Correction:
Note: This PI ONLY applies to a false popup message displaying either Climate O or false HVAC settings in the radio display. The HVAC system is
otherwise fully functional. If you are diagnosing a HVAC system malfunction, this PI does NOT apply.
Note: The GMC Terrain and Chevrolet Volt do not require a Serial Data Gateway Module Update. Checking radio Software and updating as needed are all
that is recommended for these two vehicles
Do NOT replace any parts for this concern. Engineering has identi ed the cause and is working toward a software solution. The solution may involve
programming more than one module in the vehicle.
While the following service procedure will reduce the frequency of occurrence, it does not provide a complete x until new serial data gateway module
calibrations are released. Please ensure the customer understands that the repair in this PI may not eliminate the condition, but it will improve it by
reducing how often it occurs.

Service Procedure
Note: If Mode, Temperature, and Blower Speeds do NOT physically change when commanded then this PI does NOT apply. Refer to SI for HVAC
diagnostics based on the condition(s).
1. Verify the condition is only false HVAC information shown in the radio display popup message and that HVAC systems are functioning as
commanded.
• If the HVAC system does not function as commanded then Stop, this PI does NOT apply. Refer to SI for HVAC diagnostics based on the condition(s)
occurring.
• If the popup message information is false, but the HVAC system functions as commanded, proceed to Step 2.
2. Verify the current radio software version. Select Home > Settings > About > Build Number.
• If the Build Number is greater than V805 then stop, no further action is necessary at this time. Once the serial data gateway module update is
available the model(s) will be moved into the service bulletin.
• If the Build Number is less than V805, reprogram the A11 radio. Refer to A11 Radio: Programming and Setup in SI. Inform the customer this radio
update will reduce the occurrence rate of the condition, but may not completely eliminate it.
Please ensure the customer understands that the repair in this PI may not eliminate the condition, but it will improve it by reducing how often it occurs
until we can release an update for the serial data gateway module. Once available, the combination of both updates will resolve the false HVAC popup
condition.

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:

Description:

Labor Time:

2081988

Reprogram radio for false Climate o message

Version History
Version
Modi ed

2
03/11/2019 - Created on
08/12/2019 - Updated Correction Section.

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