[rangerross]

In an earlier post you had regarding this problem you indicated that the dealer had replaced the rear brake pads and resurfaced the rotors. You also stated that the sound was eliminated for approximately two weeks following the brake service. It sounds to me like the brake pads are developing a glaze which results in the noise you are describing. Have the dealer pull the pads and check for glazing on the surface. If glazing is found it is normally caused by excessive build up of heat. Several things can cause this, one of which could be a sticking caliper.

GM seams to be having a problem with brake pads. My wife drives a ?05 convertible Vette with the Z51 performance package. The brakes are so noisy that it is embarrassing to drive. Sounds like metal on metal. GM actually has a service bulletin stating the noise is normal for the high performance brakes used on the car and no fix is available.

As ShortBus suggested, trading the H3 for an H2 will eliminate the problem ? it did for me.