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Service bulletin PIT5734G

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 id10250001
Published by NHTSA2024-02-12
Manufacturer's numberPIT5734G
Manufacturer's date2024-01-30
NHTSA componentEQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

NHTSA's summary

This Preliminary information communicates an issue with poor heater performance and advises dealerships to inspect the heater core inlet and outlet hoses for being twisted or kinked.

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

Equipment and accessories, Glass, wipers and mirrors, Heating and air conditioning, Labels and manuals

Vehicles listed
CADILLAC ESCALADE2024
CADILLAC ESCALADE ESV2021, 2022, 2023
CHEVROLET SILVERADO 15002020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2021, 2022, 2023, 2024
CHEVROLET TAHOE2021, 2022, 2023, 2024
GMC SIERRA 15002020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON XL2021, 2022, 2023, 2024

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

Recalls for the same vehicles and component
20221602022-03-31. Accessories
20201652020-04-16. Accessories
20194942019-10-03. Accessories

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
25-NA-1702025-10-21. Service bulletin. This service bulletin provides a repair procedure to correct a customer concern of Loss of Air Conditioning, Weak Cooling, and/or Warm Air Coming from Vents.
22-NA-1612025-09-27. Service bulletin. This informational bulletin provides information for dealers/technicians on power folding mirrors do not fold at the same speed.
24-NA-1642025-04-15. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
24-NA-0462025-03-13. Service bulletin. This technical bulletin provides a procedure to correct the condition of Suction Cup Marks on Window Glass.
24-NA-1642025-03-06. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.
PIE08182025-03-06. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regard to the outside rearview mirror skull cap missing.
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-2592024-12-20. Service bulletin. This service bulletin provides a service procedure to correct customer concerns of Air Conditioning (A/C) Not Working and/or Blows Warm Air.
23-NA-1672024-12-18. Service bulletin. This informational bulletin provides information on Outside Rear View Mirror Defog or Defrost Times Different for Passenger and Driver Mirrors.
24-NA-1642024-09-25. Service bulletin. This bulletin provides information on Wiper Blade Maintenance Tips.