Where is the bank one O2 sensor on a Chevy Silverado 1500?

The location of the bank 1 oxygen sensor (O2 sensor) on a Chevy Silverado 1500 depends on the year and engine. Bank 1 always refers to the side of the engine containing cylinder #1. However, the exact placement of the sensor(s) (there's usually an upstream and downstream sensor) can vary.

To find it, you'll need to:

1. Identify your engine: Look for an engine code (like a 5.3L, 4.3L, or 6.0L) usually found on a sticker under the hood or in your owner's manual. This is crucial.

2. Consult a repair manual: A repair manual specific to your year and engine will have diagrams showing the precise location of all O2 sensors. You can find these online (often for a fee) or at an auto parts store.

3. Use an online diagram: Websites like AutoZone, Advance Auto Parts, or others often have online parts diagrams. Enter your vehicle's information to find a diagram of your engine showing the O2 sensor locations.

General Location Hints (but not guaranteed):

* Upstream (pre-cat) sensor: Usually located in the exhaust manifold or close to it before the catalytic converter.

* Downstream (post-cat) sensor: Usually located in the exhaust pipe after the catalytic converter.

Without knowing your specific Silverado's year and engine, I cannot give you a precise location. Always use a repair manual or parts diagram specific to your vehicle to avoid making a mistake. Incorrectly identifying the sensor can lead to unnecessary repairs or damage.