I have a 1997 Blazer. The O2 sensor has went bad on it. Where is the O2 sensor located and how do I fix it.

Toni, April 2007

the sensor are located under the car if your car has three two are found on the exhust pipes one on each pipe and one after the cat neer the end of the transmission. and if it has two one on the exhust pipe and the other one after the car by the end of the transmission

epecenter, October 2007