There is a resistor pack operated by the fan switch. It has failed. You need to replace it.
blower motor resister is bad
It is located to the rear of the fuel tank and behind the rear differential up high.
the low and high beam are in one bulb. remove the battery and air filter and you will have access to them
did you find a solution yet
Defective heater resistor pack.
heater resister is bad
Defective Heater Resistor Pack.
sounds like your water pump ain't pumping, don't drive it till it is!. could be as simple as a new fan bewlt or might even need a pump
buy the book on your car car.
NO
Maybe because your climate control system needs to be repaired....
It will depend on year of Pontiac Grand Am and whether you are looking for high-beam or low beam. See sources and related links below to lookup by make, model and year.