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Service bulletin 17-NA-156

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 id10137652
Published by NHTSA2018-05-21
Manufacturer's number17-NA-156
Manufacturer's date2017-05-10
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE (PCV)

NHTSA's summary

This technical bulletin provides a procedure to reprogram the ECM to correct the condition of DTC P0336 Crankshaft Position Sensor Performance due to sensor concerns.

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, Exhaust and emissions, Crankcase ventilation (PCV)

Trouble codes named

P0336

Vehicles listed
BUICK LACROSSE2017
CADILLAC XT52017

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