What is the wattage of factory stereo amplifier on a 2002 Chevy Impala?

The factory stereo amplifier in a 2002 Chevy Impala doesn't have a single, easily stated wattage. The power output varies depending on the specific sound system option installed in the vehicle. Some models had more powerful systems than others. There's no single definitive answer without knowing the specific trim level and options of the Impala.

To find the actual wattage, you'd need to:

* Check the owner's manual: This is the best place to look for specifications on the audio system.

* Inspect the amplifier itself: If you can access the amplifier (often under the rear seat or in the trunk), it may have a label with wattage information.

* Consult a wiring diagram: A wiring diagram for your specific Impala model might specify the amplifier's output.

Without this information, any wattage figure would be purely speculative.