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Service bulletin 18NA015

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 id10139253
Published by NHTSA2018-06-04
Manufacturer's number18NA015
Manufacturer's date2018-01-17
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

This technical bulletin provides a procedure to fill the cooling system if a customer experiences a condition of Gurgle or Water Rush Noise from Dash Area Upon a Stop due to the system not being filled all the way.

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, Cooling system

Vehicles listed
CHEVROLET MALIBU2016, 2017, 2018

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
PIP5684B2020-08-10. Service bulletin. This Preliminary information communicates the use of air leak diagnostic test tool CH-52250 in addition to the information found in the service manual.
19NA1042019-07-29. Service bulletin. This informational bulletin provides information for dealers/technicians and customers on steam/vapor coming from the front grille or radiator area.
PIE0385B2018-05-21. Service bulletin. This engineering information bulletin ends the need for information from the field on vehicles that have the concern of a noisy water pump.
17-NA-1202017-08-15. Service bulletin. This technical bulletin provides a procedure to replace the outlet radiator hose and radiator core brackets if the customers concerned of a coolant leak.
16NA1232016-10-14. Service bulletin. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE ON REPAIRING CORROSION IN THE WIRING HARNESS THAT MAY CAUSE THE CUSTOMERS CONCERN OF THE COOLING FANS INOP.
16-NA-1232016-08-09. Service bulletin. THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPLACE THE SPARE KEY TO CORRECT A CUSTOMER CONCERN THAT THE KEY DOES NOT STAY FULLY RETAINED WITHIN THE VEHICLES REMOTE.