I just picked up a 1998 K2500 and the brake pedal is soft and able to go all
the way to floor. I have inspected all the brakes and they have plenty of
life left, I also bleed the lines at each wheel. Is there anything else to
check before replacing the master cylinder?

thanks,
mike

Another way to check the master is to pull the lines off of it and put
plugs in the ports. If the pedal still goes to the floor .... "It's the
Master Cylinder Felix!!"

"mike" <mmeivesatnigrellidotcom> wrote

I just went through this on a 97 C1500 Suburban. I could not get a hard
brake pedal. I replaced the master cylinder and bled the brakes several
times - still the pedal was soft. I eventually took it to a brake shop -
they checked everything out to be OK - bled the brakes again - adjusted the
rear drums, which helped ,but still the pedal is, in my opinion, soft. The
brake shop told me it was typical for a Chevy truck - they all have soft
pedals! The brakes work (sort of) but do not fill me with confidence. My
next step was to replace the front brake hoses but as the transmission went
out I have not got around to this yet.

Doug


"Shoe Salesman" <someone (AT) microsoft (DOT) com> wrote

Check the rubber lines thoroughly, a weak line will give a definite soft
pedal! Replace Both front lines even if only one is weak! I have solved many
soft pedal situations with a good thorough vacuum bleed. Master cylinder
replacement might still be in order.


"mike" <mmeivesatnigrellidotcom> wrote