1. Start the engine. Make sure the engine is running, as the heater will not work without power.
2. Locate the heater controls. The heater controls are usually located on the center console of the vehicle.
3. Turn on the heater fan. The heater fan button is usually located on the left side of the heater controls.
4. Set the desired temperature. Use the temperature knob to select the desired temperature for the heater.
5. Adjust the fan speed. Use the fan speed knob to select the desired fan speed.
Here are some additional tips for using the heater in a 2003 Chevy Impala:
*When first turning on the heater, use the highest fan speed to quickly circulate the warm air through the vehicle.*
*Gradually lower the fan speed once the desired temperature has been reached.*
*If the heater is not blowing hot air, check the coolant level in the vehicle's reservoir.*
*If the coolant level is low, add more coolant and then try turning on the heater again.*
