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Service bulletin PIE0633A

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 id10200166
Published by NHTSA2021-08-09
Manufacturer's numberPIE0633A
Manufacturer's date2021-06-30
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM; EQUIPMENT:APPLIANCE:AIR CONDITIONER

NHTSA's summary

This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the A/C not cooling the vehicle cabin and/or the A/C air is not cold coming from the vent.

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

Engine, Equipment and accessories, Heating and air conditioning, Cooling system

Vehicles listed
BUICK ENCLAVE2021
CHEVROLET TRAVERSE2021

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