The O2 sensor wire colors are as follows:
Purple or Purple/White- sensor input to the pcm, or computer
Tan or Tan/White- sensor return (common) to the pcm
Pink or Brown- 12V ignition power to the O2 sensor preheater
Black or Black/White- 12V common or ground return to chassis for O2 sensor preheater.
How do you unplug an oxygen sensor on a 2003 Chevy Cavalier
How do you change oxygen sensor on a 2006 Chevy aveo?"
where is the O2 sensor on a 2002 chevy trailblazer
where is the oxygen sensor in a 1995 gmc jimmy
On the muffler
The sensor is located in the rear exhaust manifold.
in the exhaust system
on the muffler
This would be the sensor after the catalytic converter.
Just unplug the electrical connector and then unscrew the oxygen sensor out of the exhaust pipe.
The oxygen sensor on a 1989 Chevy Celebrity is located in the rear exhaust manifold on top about the center.