RepairPal's independent, master mechanics track down the best of the best in auto repair. Learn more »
Get the latest advice about your car
is there a front and a rear oxygen sensor on a 2002 impala
You have 3 O2 sensors on your V6 Impala. One front O2 sensor (sensor 1) for each bank of the V. Bank one is where cylinder #1 is. And one rear O2 behind the catalytic convertor - Bank 1 Sensor 2.