1. Consult your owner's manual: This is the best place to start. The manual should have a diagram showing the location of the engine block heater cord.
2. Check the front of the engine block: This is the most common location. Look closely at the lower portion of the engine block, near the driver's side (often towards the bottom and somewhat towards the center). The plug might be tucked away, behind other components.
3. Look near the radiator: Sometimes, the plug is located near the radiator, but this is less common than the engine block.
4. Examine the underside of the vehicle: In some rare cases, the cord may be accessible only from underneath the car. Use caution if you choose to look under the car. Support the vehicle properly with jack stands before going underneath.
If you can't find it after checking these areas, and you have the year and model of your Impala, you might be able to find images online or consult a Chevy parts diagram. You could also ask a mechanic or a local Chevy dealer.
