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Service bulletin PIT5878E

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10240780
Published by NHTSA2023-08-21
Manufacturer's numberPIT5878E
Manufacturer's date2023-07-11
NHTSA componentVISIBILITY: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 2023-2024 LYRIQ.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Glass, wipers and mirrors, Heating and air conditioning

Vehicles listed
CADILLAC LYRIQ2023
CADILLAC redundant LYRIQ2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
24-NA-1642025-04-15. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
24-NA-1642025-03-06. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
21-NA-0432025-02-12. Service bulletin. 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.
24-NA-1642024-09-25. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
PI0754G2024-08-17. Service bulletin. This PI provides information on Rear and Side Tempered Glass Spots (Quench Marks) and that they are a normal characteristic.
PIE0769D2024-08-15. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the door windows that will not roll all the way up.
PIE0769C2024-03-06. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard the door windows will not roll all the way up.
PIC6537A2024-02-12. Service bulletin. This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that Engineering is working on a resolution.
PIC65372024-02-12. Service bulletin. This Preliminary information communicates that a noise or vibration maybe heard from the A/C compressor and that Engineering is working on a resolution.
24-NA-0112024-02-02. Service bulletin. This service bulletin provides repair information to correct a customer concern of rear sunroof itching.