i have a 1999 jeep cherokee classic, with a stock cap/rotor. a replaced the cap/rotor about a month ago. now it has this "chirping" sound to it. could it be the bearing to the rotor, or just need some electric grease on the pins?? thanks

 

My renix does the same thing, but intermittently. Gonna take it apart and lube what I think contributes to it and see what happens.

 

Good idea...easiest way to go first...