Affected Component: ENGINE (PWS)

Date Published
MAR 12, 2018
NHTSA TSB #
10137181
TSB Document
Summary
This Preliminary information communicates diagnostic tips for misfires on active fuel management cylinders and engineering investigations into cylinder 6 misfire on XT5 and cylinder 4 misfire on LaCrosse both of which are 2017. Changes to Preliminary informationinclude adding MY2018, advising of calibration for previous investigation and adding pictures to identify concern. Also difining calibration update information.