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Where is the O2 sensor located on a 1988 Chevy Silverado 1500?

The location of the O2 sensor on a 1988 Chevy Silverado 1500 depends on the engine. There's no single answer. It's typically located in the exhaust manifold or the exhaust pipe, close to the engine.

To find it, you'll need to:

1. Identify your engine: Check your vehicle's documentation or the engine block itself for the engine displacement (e.g., 5.7L, 6.2L, etc.).

2. Consult a repair manual: A repair manual specific to your year and engine will show you a diagram of the exhaust system and the exact location of the O2 sensor(s). Many online resources (like Haynes or Chilton) offer manuals for download or purchase.

3. Look for a wire: The O2 sensor is a threaded device with a single wire (or sometimes a few) leading to it. Look for this wire near the exhaust manifold or pipe. Be careful as the exhaust system is hot.

Without knowing the specific engine, it's impossible to give a precise location. Using the steps above will greatly increase your chances of finding it.

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