Emissons Recall - General Motors has decided to conduct a voluntary emissions recall involving certain vehiclest hat are equipped with a twin-turbo engine and a manual transmission. If a malfunction causes the air-fuel mixture in onecombustion cylinder of the engine to differ from other cylinders, the Engine Control Module (ECM) may not illuminate the MalfunctionIndicator Light (Check Engine Light), and may not set a diagnostictrouble code, as required. Dealers are to reprogram the Engine Control Module (ECM) with the corrected software.
