1997 Chevy Suburban Service Engine Light - O2 Sensor code

1997 CHEVROLET SUBURBAN
107,353 MILES • V8 • 4WD • AUTOMATIC
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FSTRICKLAND
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Service Engine light came on yesterday and code says bad O2 sensor on right bank. There are 3 O2 sensors on my vehicle according to the auto parts guy and I need to replace all 3 at the same time according to him. Is this correct or can I just replace the one that indicates "bad"?

Thanks,

Flynn
Oct 9, 2008 at 2:55 PM
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CLARENCET
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thre thing is if your mechanic said bank 2 sensor 3 or bank 1 or 2 sensor 2 then its probably that sensor some places replace all three just to cya themselves or if they see another problem that might occur in the same area to prevent a come back
Oct 10, 2008 at 1:28 PM