brake issues
 

When I start my blazer for work I back up shift it to drive when I get to the stop sign I brake and make noise sounds like something cracked on the disk, calliper idk but when I break again it doesn't make that nosie anymore .. It does it only once when I don't drive my truck for a long time like 5 hours or more ... Idk what's the issue

take off the tire and take a look.. or head into a shop... could be a rock, or caliper... we all can do all the guessing, but until u take off the tire and take a look see... wont really know.

:)

It could be rusty rotors... Once you use the brakes the rust rubs off and doesnt make that sound again... Happens to my big rig every monday morning...