Affected Component: ENGINE (PWS)

Date Published
JUL 01, 2014
NHTSA TSB #
10056212
TSB Document
Summary
IMPCO: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. SOME VEHICLES WITH COMPRESSED NATURAL GAS (CNG) SYSTEM WERE BUILT INCORRECTLY WITH THE ENGINE CONTROL MODULE (ECM) CALIBRATION AND WOULD NEED TO HAVE ECM REPROGRAMMED. MODEL 2015 SILVERADO HD, SIERRA HD. *PE