You have two questions requiring two answers, the fan motor not functioning in the 1, 2, or 3 position is due to the resistor failing, the dealer has the part that is located under the dash on the passenger side close to the firewall.
The headlight problem you are having could be the ignition switch. Replace the ignition switch and you will be fine.
Replace the resistor first, then if the headlights still do not work at night then go to the more expensive route to remedy the issue.
It depends on what you like and what makes your computer run the game faster. Just mess around with the settings, and you will find your ideal setting.
The headlights should turn on and off automatically depending on which setting you have your switch set at. The switch is located on the turn signal lever. I always leave mine on auto.
As per www.totalrecallinfo.com there are 4 recalls on this item, but not on the headlights.
The headlights do not have an external fuse. The underhood computer (FCM) has internal fusing for the headlights.
Bad blower resistor? Bad switch?
Yes, there is an air conditioning relay on the 2001 Pontiac Grand Prix. The air conditioning relay is located in the fuse box underneath the hood.
You can find these headlights online, but aftermarket headlights still will cost you a pretty penny, if your grand prix has plastic headlights and it is just a matter of discoloration this could easily be fixed. Just go to the The Headlight Solution, at headlightsolution.net they specialize in restoring / cleaning headlights to like new condition.
No. Different shape.
yes
25 feet.
I was looking at the 1996 Mercury Grand Marquis Owner Guide and it shows that you can change each of the ( 4 light bulbs for the 2 low beam and the 2 high beam headlights ) ( the low beam headlights take bulb # 9006 ) ( the high beam headlights take bulb # 9005 )
Externally, soapy water and a cloth.