Well, my previously perfectly performing 300C has developed a glitch. The rear window power sunshade is "clicking" when it either reaches the top or the bottom of its travel. At the bottom retracted position, it will continuously click. At the top, it will click for a little while then it stops. I have the dealer's (not Chrysler's) extended warranty but not sure it covers stuff like this beyond the powertrain. If it is not covered am I to expect a lot of $$ grief with this repair? Has anyone ever had this issue and fixed it on their own?