Affected Component: ENGINE (PWS)

Date Published
JUL 07, 2014
NHTSA TSB #
10092709
TSB Document
Summary
14231 - EMISSIONS RECALL. IMPCO AUTOMOTIVE IS CONDUCTING THIS EMISSION RECALL. FOR THE CONVENIENCE OF OUR CUSTOMERS, GENERAL MOTORS HAS AGREED TO ASSIST IN ADMINISTERING THIS RECALL THROUGH ITS CHEVROLET AND GMC DEALERS. IMPCO AUTOMOTIVE HAS DECIDED TO CONDUCT A VOLUNTARY EMISSION RECALL INVOLVING CERTAIN VEHICLES EQUIPPED WITH A COMPRESSED NATURAL GAS (CNG) SYSTEM. THESE VEHICLES WERE BUILT WITH AN INCORRECT ECM CALIBRATION. DEALERS ARE TO REPROGRAM THE ENGINE CONTROL MODULE (ECM). THE CHANGE WILL ALLOW THE VEHICLE TO OPERATE AS ORIGINALLY DESIGNED.