I have an '02 quad cab with heated rear-view mirrors. My passenger side mirror doesn't seem to be working. The fuse in the box is fine. Where do I need to look to find the problem. If I have to take the mirror apart, how do I do this? Any suggestions are welcome.

 

I would check to see if theres continuity in the wires from teh fuse block to the switch and from the switch to the mirror. A wire may be shorted, but if the fuse didnt blow, may be the switch or the mirror itself.

Its one of 4 things.
Bad wire from teh fuse block to the switch
Bad switch (but usually both mirrors wouldnt work, but dont rule it out)
bad wire from the switch to the mirror heater grid
Bad mirror heater grid (just replace the mirror then. Easier than trying to get the glass out and rewiring it up).