Affected Component: SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

Date Published
AUG 01, 2012
NHTSA TSB #
10046339
TSB Document
Summary
BUICK/CADILLAC/CHEVROLET/GMC: MASTER CYLINDER WAS UNBOLTED FROM BRAKE BOOSTER AT TIME OF APPLYING BRAKES WITH BRAKE PEDAL, THAT WAS LOW AND POSSIBLE CAUSE WAS SMALL VACUUM LEAK BETWEEN MASTER CYLINDER AND BRAKE BOOSTER WAS FOUND. CERTAIN MODELS 2009-2013 OF BUICK, CHEVROLET, CADILLAC, GMC. *PE UPDATED 10/15/12. *PE