98 GMC Sierra Z71.....Funny ratcheting sound in font brakes....Any Ideas ?

antilock,bleed the back brakes

good luck

if no *go an infection of fluids* or loss of coolant isn't occurring, i might examine the temp gage. on a 'ninety 8, the workstation possibly attempting to compensate making use of that sensor as enter. in any different case, head gasket. circulate to an motor vehicle areas shop and get a chem attempt equipment for the coolant interior the radiator. much less costly. see if exhaust gasses are getting into the coolant passages. that undertaking isn't constantly seen to the bare eye. do a compression attempt. FYI, head gaskets can leak w/o *go an infection of fluids*. they could leak to the ambience. nonetheless reason over heating. yet often slower than what you describe. water pumps purely a bout constantly leak in the event that they're undesirable. and the intake gasket in this do have *blind* water passages. so in case you're *eating* coolant, this is yet another threat. intake gasket leaks can on occasion be solved basically via re-torquing the fasteners.

A spring in the master wheel cylinder may have come lose.

Or your brake pads are shot and the rivets in the pad may be grinding in to the rotors.

you should sell it and buy one of those japs car!