Question about 1999 GMC Suburban

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Replacing 02 sensors

We have a 1999 suburban. We have to replace 2 of our 02 sensors. Does anyone know how difficult this will be?

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  • osborne05 Feb 03, 2009

    Thank you very much for taking the time to answer my post.

  • osborne05 Feb 03, 2009

    Thank you, didn't know about the socket. This should make the job much easier.



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Iowa500 is correct.  They are really easy to change.  All your major auto parts stores carry oxygen sensor sockets that will attach to the end of a 3/8" drive ratchet.  Some auto parts stores will rent these for free (you only pay a deposit, no rental fee). This makes the job SSSOOOOOO much easier.  You may have to use an extension to get to them, however they are really easy. 
Just incase you don't know, they are mounted in the exhaust pipes.  You will have one on the passenger's side and driver's side.  Basically its like changing spark plugs.  They screw in about the same.
Any further questions, just ask.
Please rate me.

Posted on Feb 03, 2009

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Not too hard to do.Your probably replacing the two in front of the makes what I believe are the best ones.Drivers side is a little harder to get the wire unplugged than the passengers.Cut the wires on the ones your replacing to get them out a little easier.

Posted on Feb 03, 2009


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