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02 sensor question

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Old 11-13-2006 | 10:35 AM
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Default 02 sensor question
here is a stupid question, when i removed my stock y i took out the rear 2 sensors, i am now throwing a code i think it is one of my sensors i reused, can i replace them with 1 of the rear sensors?
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Old 11-13-2006 | 10:43 AM
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Did you turn off all of your rear O2 codes already?
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Old 11-13-2006 | 10:55 AM
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yeah, i had the rear 02 deleted since my first tune, and it has been 300-500 miles since they were installed, i put a bunch of silicone on one of the collector gaskets and i think it scewed the sensor
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Old 11-13-2006 | 02:25 PM
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i know 03 and newer front and back are the same.. not sure about 99-02
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Old 11-13-2006 | 03:13 PM
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Originally Posted by 04BlackGmc
i know 03 and newer front and back are the same.. not sure about 99-02
they're not the same, at least on the 2006, wiring is different. also, I can't unplug just the O2 sensor itself from the short 8" harness attached to it that plugs into the main harness.
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Old 11-13-2006 | 03:19 PM
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weird. Well mine im 99% sure are all the same PN and i had all my o2's off all the harness's when i did my exhaust.
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Old 11-13-2006 | 03:23 PM
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According to my programn 04 shows for the 5.3 and 4.8
Engine Each 12587785 all around
now for the 6.0 it shows different for back and front.

no info on 06's yet.. Stone what year is your truck?
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Old 11-13-2006 | 03:25 PM
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Stone your 02's show different from front and back
Front 25315809
Back 25312201
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Old 11-13-2006 | 04:51 PM
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Originally Posted by 04BlackGmc
Stone your 02's show different from front and back
Front 25315809
Back 25312201
That's right. I had to replace a front one once and ask the parts guy. My 02 uses a different part #front to rear. I'm not sure what the difference is, maybe just the plug of the length of the pigtail.
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Old 11-13-2006 | 05:41 PM
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i knew atleast one the ploq was different, not too sure about the other
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