o2 sensor where are they all located?

1995 CHEVROLET TAHOE
240,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
BOB STARK
  • MEMBER
  • 3 POSTS
how many o2 sensors are on a 1995 tahoe 5.7 and where are they all located. i know of ONE on passage side in exhast pipe just past the manifold
Jan 6, 2011 at 7:44 PM
Advertisement
Avatar
SQM
  • CERTIFIED EXPERT
  • 6,383 POSTS
Hello,

This vehicle has 4 oxygen sensors.
Two of them located before the catalytic converter in the exhaust manifold and the other two located after the catalytic converter, in the pipe.

https://www.2carpros.com/articles/how-an-oxygen-sensor-works
https://www.2carpros.com/articles/how-to-test-an-oxygen-sensor-02-sensor
https://www.2carpros.com/articles/how-to-replace-an-oxygen-sensor

I have attached the replacement procedure for your reference.

Please let me know if you have any questions.
Thank you.
Oct 12, 2021 at 9:17 PM