Hey guys,

I don't know how many of you know this, but I have this 2005 Impala 3.8L-K. My scanner says the Bank 1 Sensor 1 O2 sensor is bad. OK, I figure---no problem. Cylinder #1 is in the front, and cylinder 2 is in the back, so I figure that B1S1 should be... Login to read more.