Clunking noise from front suspension when braking

[RchZ28]

When I hit my brakes i get a bad clunk that sounds like its coming from the front suspension.

any ideas? i have 80,000 miles on the clock so i know my suspension is due for an upgrade.

[rotwiler]

After I did a brake replacement at 32k miles I have had a clunk at times when I haven't used the brakes for awhile. Started letting loose when braking hard around a big turn, almost like it locks up and the ABS kicks in and lets off for a second..is kinda strange. Had it looked at several times and nothing was found so I have no clue. I might just go to GM and have them replace the front brakes and rotors. Did yours happen after a replacing the brakes?