1997 GMC Sierra V8 Four Wheel Drive Automatic 128000 miles
About two weeks ago my brake pedal started going all the way to the floor about 95% of the time that I brake. I was told that the master cylinder is bad and needs to be replaced. I think I can do it myself but want to know if it is worth it or should I just take it in and get it looked at by a proffessoinal. Also, what is the best way to bleed off the brake system if I do change it myself and where exactley are the bleed off screws located?