GENERAL MOTORS: 2010-2013 BUICK , CHEVROLET, GMC : THIS TSB CONTAINS AN OWNER NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. SOME VEHICLES EQUIPPED WITH 2.4L ENGINE MAY EXPERIENCE HIGH OIL CONSUMPTION OR FROZEN OR PLUGGED POSITIVE CRANKCASE VENTILATION SYSTEM (PCV) DURING COLD WEATHER, CAUSING AN OIL LEAK IN REAR CRANKSHAFT SEAL. *LJ
