# Service bulletin PIT5878B

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10216378
- Published by NHTSA: 2022\-07\-25
- Manufacturer's number: PIT5878B
- Manufacturer's date: 2022\-06\-29
- NHTSA component: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

## NHTSA's summary

This Preliminary information communicates to the field engineering contacts to assist in the diagnosis of HVAC concerns on the new 2022 HUMMER EV and the 2023 LYRIC.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-10216378-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-10216378-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Glass, wipers and mirrors, Heating and air conditioning

## Vehicles listed

- 2022 GMC HUMMER EV PICKUP

## Other bulletins for the same vehicles and component

- [21\-NA\-043](/bulletins/11014230.md), 2025-02-12, Service bulletin: VISIBILITY/WIPER; SERVICE BRAKES; ENGINE; ELECTRICAL SYSTEM; WHEELS. This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold \(prepping\) to the customer.
- [PI0754G](/bulletins/11006511.md), 2024-08-17, Service bulletin: VISIBILITY/WIPER. This PI provides information on Rear and Side Tempered Glass Spots \(Quench Marks\) and that they are a normal characteristic.
- [PIT6003](/bulletins/10236159.md), 2023-05-15, Service bulletin: VISIBILITY. This Preliminary information communicates how to properly remove the outside mirror to add the GM Accessory Outside Rearview Mirror Projection Lights without breaking the mirror glass.
- [PIT5878D](/bulletins/10236149.md), 2023-05-15, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This Preliminary information communicates to the field engineering contacts to assist in the diagnosis of HVAC concerns on the new 2022\-2024 HUMMER EV and the 2023 LYRIQ.
- [PIT5878C](/bulletins/10234235.md), 2023-04-17, Service bulletin: EQUIPMENT:ELECTRICAL; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM; ENGINE AND ENGINE COOLING. This Preliminary information communicates to the field engineering contacts to assist in the diagnosis of HVAC concerns on the new 2022\-2023 HUMMER EV and the 2023 LYRIQ.
- [PI0754F](/bulletins/10232283.md), 2023-03-03, Service bulletin: VISIBILITY:GLASS, SIDE/REAR:CRITICAL FASTENERS; UNKNOWN OR OTHER; STRUCTURE. This PI provides information on Rear and Side Tempered Glass Spots \(Quench Marks\) and that they are a normal characteristic.
- [12\-01\-37\-001F](/bulletins/10215643.md), 2022-07-12, Service bulletin: EQUIPMENT; ENGINE AND ENGINE COOLING; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This service bulletin provides information to dealership personnel on a new refrigerant \(R1234yf\) for A/C service.
- [PIT5878A](/bulletins/10208044.md), 2022-02-14, Service bulletin: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. This Preliminary information communicates to the field engineering contacts to assist in the diagnosis of HVAC concerns on the new 2022 HUMMER EV.
- [PIT5878](/bulletins/10206736.md), 2022-01-24, Service bulletin: EQUIPMENT:APPLIANCE:AIR CONDITIONER. This Preliminary information communicates to the field engineering contacts to assist in the diagnosis of HVAC concerns on the new 2022 HUMMER EV.
- [21NA152](/bulletins/10200149.md), 2021-08-09, Service bulletin: VISIBILITY:GLASS, SIDE/REAR; EQUIPMENT. This service bulletin provides information for dealers/technicians on glass ultraviolet \(UV\) Ray protection and tint percentage.

JSON: [/v1/bulletins/10216378](/v1/bulletins/10216378)

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