Question about 2002 Chevrolet S-10

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2002 Chevy S10 Pickup 4 cyl oxygen sensor diagram

Posted by Anonymous on


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SOURCE: my chevy s10 failed emissions

Have your cat. converter checked out. I just had one of these for the same reason in my shop today.

Posted on Jul 09, 2008



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SOURCE: Engine Wire diagram for S10

go to and you can register any type car and they have pretty good prints and service manuals on line. I have an 89 chevy s10 I just rebuilt my motor and overhauled the complete truck just waiting on a new paint job. best of luck

Posted on Nov 28, 2008



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SOURCE: I need a wire diagram for a 2000 zr2 s10 chevy 4x4

  1. this should help.8d4efbb.gif

Posted on Aug 07, 2009



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SOURCE: where is the bank 2 sensor 1 located.

Oxygen sensors are always numbered like this:

Bank 1 sensor 1
Bank 2 sensor 1
Bank 1 sensor 2
Bank 2 sensor 2

some manufacturers use a kind of shorthand that reads different, but means the same thing:
Sensor 1/1 or O2s 1/1
Sensor 2/1 or O2s 2/1
Sensor 1/2 or O2s 1/2
Sensor 2/2 or O2s 2/2

Bank 1 is always the side of the engine where cylinder number 1 is located and, of coarse, Bank 2 is the opposite side.
On a 4 cylinder engine, there is only 1 bank and it is always referred to as Bank 1.

Sensor 1 is always the upstream sensor (The one located BEFORE the catalytic converter)
Sensor 2 is always the downstream sensor (the one that is located AFTER the catalytic converter.

Most GM engines have #1 cylinder located on the left bank, (or Driver's Side) of the engine,

So, the answer to your question would be that you are looking for the sensor located before the catalytic converter on the right (or Passenger Side) of the truck.

Posted on Oct 17, 2009


Jeffrey Turcotte

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SOURCE: need firing order diagram for chevy s10 pickup 4.3



Posted on Oct 24, 2010

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I apologize for the late response...Due to the bad economic situation this site has had a substantial (+50%) increase in the number of questions being asked in the last four months.
I assume you have a 4.3L and not the 2.2L?

For the 4.3L:
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Let me know if this helped, or if you have additional information or questions. Feel free to contact me at!

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