2000 Sierra O2 Sensors


Old 10-27-07, 08:02 PM
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Join Date: Oct 2005
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Unhappy 2000 Sierra O2 Sensors

I have 370 thousand kilometers on my 2000 Sierra. It still has the origional O2 sensors in it. Question? Are they doing any thing or are they baked. There has been no check engine faults that I know of. I hate to replace them if they still work, 400 dollar touch. Is it worth it to replace them? Thanks.
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Old 10-27-07, 08:38 PM
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Only replace them if your get a trouble code for them. Your check engine light will come on for this.

O2 sensors are not an item you typically replace if they are showing no signs of failure (i.e. check engine light).
Old 10-29-07, 05:28 AM
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Smile 2000 Sierra O2 Sensors

Thanks Mark, Ill wait until they give me a sign.

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