when i get in my truck in the mornin or if has been sittin awhile and i hit the brake pedal the left rear wheel will lock up in my driveway or grass or wat ever. could somethin be wrong with my abs? cause it will lock up and then i loose brakes till it catches again or till i get onto the road then it works fine. got one problem fixed now another

 

im not sure what would be causing it, but i know my brakes are real touchy first thing when i jump in it. hopefully someone else will jump in here and help ya out

 

it could be a bad brake line might have some trapped air check that