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Service bulletin PI1164A

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 id10150630
Published by NHTSA2018-12-10
Manufacturer's numberPI1164A
Manufacturer's date2014-09-18
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

NHTSA's summary

This preliminary bulletin provides information on how to check for ice and/or snow build up and to install a radiator cover to correct the customers concern of reduced engine power and service engine message on.

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, Labels and manuals, Cooling system, Radiator

Vehicles listed
BUICK LACROSSE2014
BUICK REGAL2014
CHEVROLET CORVETTE2014
CHEVROLET EXPRESS2010, 2011, 2012, 2013, 2014, 2015
CHEVROLET SILVERADO 15002010, 2011 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 15002014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002010, 2011, 2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 35002013 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SPARK2014
CHEVROLET SPARK EV2014 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SUBURBAN2015
CHEVROLET TAHOE2015
GMC SAVANA2010, 2011, 2012, 2013, 2014, 2015
GMC SIERRA 15002014 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002010, 2011, 2012, 2013, 2014, 2015 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2015 (the catalog's model; the bulletin names a series or trim of it)
GMC YUKON2015
GMC YUKON XL2015

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
PIE02832024-04-08. Service bulletin. Engineering Information.
20NA1662022-05-31. Service bulletin. This informational bulletin advises the technician of possible coolant entering the areas of the engine, either through failed parts or defects in the castings, that may be the cause of the concerns related to the MIL or the engine running rough.
PI1164B2021-09-07. Service bulletin. Reduced Engine Power with Service engine message displayed and DTC P2263 Set
18NA1032020-11-30. Service bulletin. This service bulletin provides information to correct a customer concern of an in-tank fuel pump whining noise, engine hard to start and/or stalls and Malfunction Indicator Lamp (MIL) is illuminated.
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.
20NA0242020-04-06. Service bulletin. This informational bulletin provides a information and diagnostic steps/tips for vehicles that are slow to heat up in cold temperatures.
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.
PIP5257B2018-08-20. Service bulletin. This Preliminary Information communication provides information to the technician on the steps to diagnose and repair vehicles that may have oil mixed in with the engine coolant. Technician will need to inspect the oil cooler if equipped for possible leaking into the cooling system through the radiator. If no issue found replace the engine as well as all rubber coolant hoses.
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.
PI1513D2017-08-15. Service bulletin. This preliminary information bulletin provides a procedure for radiator and engine coolant thermostat replacement to eliminate coolant smell and/or a slight leak at the radiator.