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Service bulletin PI1535B

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 id10140341
Published by NHTSA2018-06-11
Manufacturer's numberPI1535B
Manufacturer's date2017-11-28
NHTSA componentSTEERING:HYDRAULIC POWER ASSIST SYSTEM

NHTSA's summary

This preliminary information bulletin provides a procedure to install a power steering gear cooling duct for track use to decrease temperature with the steering gear.

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

Steering, Power steering

Vehicles listed
CHEVROLET CORVETTE2014, 2015, 2016, 2017, 2018

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

Recalls for the same vehicles and component
25V1750002025-03-20. STEERING:ELECTRIC POWER ASSIST SYSTEM
19V0860002019-02-07. STEERING:ELECTRIC POWER ASSIST SYSTEM

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
12-02-32-002A2018-04-23. Service bulletin. This technical bulletin provides a revision for 12-02-32-002 to add the 2013-2014 model years, add noise as a possible condition and add a Note in the Instructions section.
PIC62532017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicle that have an intermittent loss of power steering assist. Technician will need to check the X1 connector for damage and ensure it is fully seated when reinstalling.
SB-16-NA-1092016-08-06. Service bulletin. "THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO INSPECT THE STEERING GEAR FOR A NORMAL CONDITION OF GREASE OR SEALANT ON EXTERIOR CASE OF GEAR DUE TO THE MANUFACTURING PROCESS."