I have a 2003 2500hd with a sensor problem i think. What happens is when i put it in park or reverse the sensor or computer does not understand that it is in park or reverse. for example when i put it in reverse my reverse lights wont come on, it will go into reverse and back up but my light dont come on. Then with park it wont unlock my doors when i put it in. Any one know and easy way to fix this?

 

Im not sure how to fix it but in my old 96 I had to jiggle the selector to get my back up lights on.