Light Switch
First, the light switches will burn up if you drive with you lights on all the time. Mopar claims these switches are not made for continous duty. Now, when you pull the switch, shake it. If it rattles, the copper metal contacts have fallen out of their holding location in the switch. If shaking causes a rattling you can try to dissamble the switch and reallign the copper contacts (I do not know how to exactly describe the contacts, but you will understand if you look). Chances are the electronics have burned up in the switch though. A replacement switch assembly for a 2001 should not run more $25 from the dealer. I will try to find the part number for you. I know this happens to these trucks. I am on my 3rd light switch. My dealer just gives me the switch, I change it in the parking ot, they get the warranty for the core. Like I said, the part is around $25 and labor for installing the switch assembly is about $45. With the age of your truck, it should still be under warranty. Just my 2 cents:-{}