Where is location of O2 sensor 2001 Chevy Impala?

The location of the O2 sensor(s) on a 2001 Chevy Impala depends on the engine type (3.4L V6 or 3.8L V6) and whether you're looking for the upstream or downstream sensor(s). There's usually one upstream and one downstream sensor for each bank of cylinders.

To find the precise location:

1. Consult your vehicle's repair manual: This is the most reliable source. The manual will have diagrams showing the exact location of each sensor.

2. Use a repair manual website or app: Sites like Chilton or Alldata provide repair information, often including diagrams. You'll need your vehicle's VIN or engine details to access the correct information.

3. Look under the car: With the engine off and cool, get under the car. The upstream O2 sensors are typically located in the exhaust manifold or very close to it. The downstream sensors are further down the exhaust system, closer to the catalytic converter. They're usually wired to the car's harness. Be careful! Exhaust components are extremely hot even after the engine has been off for a while.

General areas (but not exact):

* Upstream O2 Sensor(s): Near the exhaust manifold, close to the engine.

* Downstream O2 Sensor(s): After the catalytic converter, further down the exhaust system.

Without knowing your specific engine, I can't pinpoint the exact location. Using a repair manual is crucial for accurate identification and safe sensor replacement.