Question about 1989 Chevrolet C/K 2500

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I need to change the oxygen sensor in a 1988 gmc vandura. I am having great difficulty getting the old one out. Any tips. I have used penetrating fluid, but I am nervous about how much torque to put on the socket.

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Yes, penetrating fluid can help, but it's very common for the threads to be seized on the 1988 model year of any car for that matter.

You might try to disconnect it and use an oxy acetylene torch on it. And use an impact wrench if it fits up there.

If you screw up the threads, they can be retapped.

If it shears, then you have a problem, that requires a cutting torch to take it out or replace the pipe or manifold.

Good luck to you in this repair.

Posted on Jul 12, 2010

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Posted on Jan 02, 2017

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