Blenny

2003 Tahoe z71. I cant seem to get the o2 sensor to break loose on bank 2 lower sensor. I do have a crows foot socket for it and i have hit it with kroil... did not budge. Now i have heated the sob to cherry red and it still wont budge! Any Ideas how to get it off from there without having to cut it out?

73shark

e to the forum.

You need to get an O2 sensor socket and use a breaker bar.

Blenny

That is part of the problem i have two styles of the socket both are o2 sockets, and yes i used a nice long breaker bar.

73shark

Sorry, I thought you said you were using a crows foot.

Blenny

no problem it is a crows foot type o2 socket

2000suburbanjeff

i did all 4 on my suburban it a 2000.best option I can find some of them are.a 12 crestwrench

73shark

A crescent wrench will tend to round off the corners.

tech2

if the sensor is junk, cut the wires close to the end of the sensor. this will allow you to put a 6 point, deep socket on it. heat up the threaded part of the exhaust pipe, not the sensor itself.

marcanders

Spray BP blaster on it and let soak as well... Might help