CHEVROLET/GMC: TSB CONTAINS AN OWNER'S NOTIFICATION LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. SOME TRUCKS WILL EXPERIENCE ENGINE GLOW PLUGS ISSUES CAUSING MALFUNCTION INDICATOR LAMP (MIL) TO ILLUMINATE AND NEED TO REPLACE ENGINE GLOW PLUGS. MODEL 2010-12 EXPRESS, SAVANA, 2011-12 SIERRA HD, SILVERADO HD. *PE
