NHTSA ID Number: 10206736
Manufacturer Communication Number: PIT5878
Summary
This Preliminary information communicates to the field engineering contacts to assist in the diagnosis of HVAC concerns on the new 2022 HUMMER
EV.
1 Affected Product
Vehicle
Condition
Some customers may experience one or more of the following conditions:
1) Heat Inoperative
2) AC Inoperative
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
The HUMMER BEV Heat and HVAC system mechanical diagnostics are still being developed with engineering support.
SEOCONTENT-START
Bulletin No.: PIT5878
Published date: 12/17/2021
Preliminary Information
PIT5878 2022 HUMMER EV Heat – Defrost – AC – Battery Cooling –
and Air Conditioning Performance Concerns
Models
Brand: Model: Model Years:
VIN:
Engine: Transmissions:
from to
GMC Hummer EV 2022 All All All All
Involved Region or Country North America
Additional Options (RPO) CJ4
Condition
Some customers may experience one or more of the following conditions:
1) Heat Inoperative
2) AC Inoperative
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
The HUMMER 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 HUMMER EV level 2
specialist.
Version History
Version 1
Modified 12/17/2021 – Created on.
SEOCONTENT-END
1 Associated Document
Manufacturer Communications
Bulletin No.: PIT5878
Published date: 12/17/2021
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- PERFORMANCE BOOSTER CHARGE KIT - ZeroR is a performance booster for use with R1234YF AC systems. You can use as many cans in your system as you wish, while being sure not to overfill the system with the included can tap with gauge.
- KIT CONTENTS - The can tap is 24 in length with a gauge metered for R1234YF systems. Standard R1234YF can taps will not work on ZeroR branded R1234YF cans, because our cans have a unique thread. 2 cans of ZeroR Permafrost in 4oz cans.
- NOT A Full Refrigerant - This product is a support fluid performance booster. It is a combination of two ZeroR products in one. The first part removes moisture (moisture can cause damage and reduced performance in the system), and the second part reduces friction (friction can reduce refrigerant flow and cause compressor damage)
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