PIT5878E

Bulletin No.: PIT5878E
Published date: N/A
Preliminary Information
PIT5878E LYRIQ BEV Heat - Defrost - AC - Battery Cooling - and Air
Conditioning Performance Concerns
Models
Brand:
Cadillac
Model:
LYRIQ
VIN:
Model Years:
2023 - 2024
from
All
Engine:
to
All
All
Transmissions:
All
Involved Region or Country North America & GM China
Additional Options (RPO)
CJ2 Or CJ4
Some customers may experience one or more of the following conditions:
1) Heat Inoperative
2) AC Inoperative
Condition
3) Any HVAC actuator concerns.
4) Any DTC's related to the HVAC system
5) Any DTC's related to the battery heating and cooling system
6) Any other issue that is related to the HVAC system
Cause
LYRIC BEV Heat and HVAC system mechanical diagnostics are still being developed
with engineering support.
Correction:
Before starting any performance or mechanical diagnosis or repairs:
1) Please create a TAC case through the Dealer Case Management system.
2) Please document any customer complaints, symptoms, and DTC's.
3) Once a TAC case is established, you should expect to be contacted as soon as possible by a LYRIQ level 2
specialist.
Version History
Version
6
Modi ed
12/17/2021 - Created on.
01/18/2022 Change verbiage in model for HUMMER EV.
06/29/2022 Adding LYRIQ Models for US and China to the PI
03/23/2023 Adding HUMMER EV 2023 Model year
04/14/2023 Adding HUMMER EV 2024 SUV Models
07/11/2023 Removed Hummer Models per the BQM and program Team
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