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o2 sensor pic request

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Old Oct 14, 2009 | 01:01 AM
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tryin to piece together some parts and havin some issues. i bought a set of o2 sensors for my swap but i think cause my harness they wont work.my motor is a 5.3l but i think my harness is from a 6.0l

is there a difference in o2 sensor plugs from a ls1,lm7 and lq4 harness? any pics of the plugs? oh its for the front set, the rears got deleted out.
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Old Oct 14, 2009 | 02:10 PM
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I have O2 plugs that are 4-pin in a square and my harness requires 4-pin in-line. What is your configuration? Maybe a swap? -Bob
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Old Oct 14, 2009 | 02:32 PM
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i think i might have the same as you.

the ones i have look like this. (i did notice that the harness that goes to the rear has this style)


i think i might need this style
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Old Oct 15, 2009 | 03:41 PM
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does anyone know how to rewire it so i can use the square plug?
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Old Oct 15, 2009 | 09:39 PM
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Originally Posted by RPD_Vette84
does anyone know how to rewire it so i can use the square plug?
Yeah, I have the same as you - can't help on the re-wire. -Bob
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Old Nov 9, 2009 | 06:48 PM
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I would need to check my wireing harness but, i know i have different plugs for the front and rear o2's.

I have 4 o2's thatg look like "D" in the above picture (the end looks like the opposite ,mail version of what you have RPD_Vette84). I also have 2 o2's that look like the second ones you posted. I think I need eather the ones you say you have "E" in my picture or i think "C" in my picture depending on which ones are the front two on my harness. I would be up for a trade or sale
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Old Nov 9, 2009 | 07:34 PM
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I might be a dumbass, but, I'm looking at my harness and only see 3 O2 sensor plugs. 98 harness, completely untouched so far. Any thoughts? Sorry if this was a hijack.
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Old Nov 9, 2009 | 08:41 PM
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Originally Posted by FoFittyFoSS
I might be a dumbass, but, I'm looking at my harness and only see 3 O2 sensor plugs. 98 harness, completely untouched so far. Any thoughts? Sorry if this was a hijack.
You're missing something or someone cut one out.
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Old Nov 9, 2009 | 09:29 PM
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Be careful, the black square and black flat O2s will interchange, however, the gray/white squares will NOT. Gray/white squares were used on the green/blue pcms and are grounded through the PCM. The black square and black flats (just like those used on the LT1s) are grounded through the case of the O2 sensor and are used on the 411 and other red/blue PCMs.
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Old Nov 10, 2009 | 01:01 PM
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how do you know the color of your PCM (Green/Blue VS Red/Blue)
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Old Nov 10, 2009 | 01:09 PM
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That's the color of the harness connectors, where they plug into the pcm.
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