Gen1 Powertrain
Repectfully request advice: Low O2S2 voltage & high LTFT caused by bad Catalytic Con
vehicle: 2011 Cruze LT 1.4L turbo, 67K miles (This car was not properly maintained by the previous owner.)
Long Term fuel trim ~ 12.7
O2S2 (down stream O2 sensor) voltage .67
vacuum at idle after warm up ~...