Location of O2 sensors on Chevy s-10 pickup?

The location of O2 sensors on a Chevy S-10 pickup depends heavily on the year, engine size, and whether it has a single or dual exhaust system. There's no single answer.

Generally, you'll find them in the exhaust system downstream of the catalytic converter(s). Common locations include:

* Before the catalytic converter(s): These are usually upstream O2 sensors, used for monitoring fuel mixtures. There might be one or two, depending on the engine.

* After the catalytic converter(s): These are downstream O2 sensors, used to monitor the catalytic converter's efficiency. Again, there might be one or two.

To find the exact location on *your* S-10:

1. Check your owner's manual: This is the best source of information. It will have diagrams showing the sensor locations specific to your truck's year and engine.

2. Look under your truck: Visually inspect the exhaust system. O2 sensors are usually threaded into the exhaust pipe and have a wire harness connected to them. They often have a distinctive shape.

3. Use a repair manual: A Haynes or Chilton repair manual for your specific year and model S-10 will have detailed diagrams and instructions.

4. Consult a parts store: Auto parts stores (like AutoZone, Advance Auto Parts, etc.) can look up the sensor locations based on your vehicle's VIN.

Without knowing the specific year, engine, and exhaust configuration of your S-10, it's impossible to give a precise answer.