1. 1982 to 1995 Chevy S10: These earlier model Chevy S10s typically have a single O2 sensor located in the exhaust manifold or exhaust pipe before the catalytic converter.
2. 1996 to 2004 Chevy S10: From 1996 onwards, most Chevy S10 models equipped with fuel injection systems use two O2 sensors. One O2 sensor is located upstream (before) the catalytic converter, and the other is located downstream (after) the catalytic converter. This configuration allows for more precise control of the air-fuel mixture and improved emissions control.
3. 2005 and Newer Chevy S10: Newer model Chevy S10s may have additional O2 sensors, such as an O2 sensor for each bank of cylinders in a V6 or V8 engine. They may also have air-fuel ratio sensors or wideband O2 sensors, which provide more detailed information about the oxygen content in the exhaust.
It's important to refer to the specific owner's manual or repair documentation for your particular model year and engine type to determine the exact number and locations of O2 sensors in your Chevy S10.
