man am i crazy or has someone ever heard a grinding or kind rumbling noise in the rear as the nose is dipping during hard braking, my trucks got 9k on it and at first i thought maybe the ABS was kicking in because the rear is getting light as the nose drops therefore maybe the loss of traction triggers the ABS?? this wasn't **extreme hard braking**because the front wasn't triggering the ABS, i know what it sounds like ,this was different, anyone??

 

The wife's 2008 H3 does the same thing. I have given a cursory exam to the brake rotors, and have seen nothing. Kinda sounds l ike sand between the pads/rotors. Have not taken it back to dealer. 28,000 miles.

 

Use the SEARCH feature, enter "rear brake noise" see what happens.

 

Had the same problem. All H3's braking system in the rear grinds divits into the rotor. I had to take it into the Hummer dealership, and they grinded them down even again. They said it happens in ALL H3's and it will happen again eventually.