Brake problems 88 gmc

Asked by Aug 22, 2014 at 08:39 PM about the 1988 GMC Sierra 1500 K1500 Standard Cab SB 4WD

Question type: Maintenance & Repair

I have a 1988 Gmc Sierra 1500 , it is lifted and has 35s . my brakes are soft. This is after i
replaced the brake booster , and the master cylinder. Anyone have any ideas I don't know
what to do next already put 200$ worth of parts on it , which didnt fix the problems , and
yes I've bled the brakes on all 4 lines , and the on the ABS system. and its comming out
with no air in the lines!

5 Answers

34,715

On till you get it straightened out do one of 2 things. Park it or put the correct size tires on it. And if it's not right with the correct size tires. Park it. It's a danger to all on or near the road including yourself.

Its been fine , its not the tires etc , it just happened and i haven't driven it since they problem started , just tried to fix it

How much of a lift did u put on it

Look heres the easyest thing to do go get a brake booster for a 2500 that's what I had to do when I lifted my 81 Scottsdale

Replace the rubber hose going to the brake caliper. Same thing happened to my '88 yesterday after sitting up for two years. (It needed another transmission). My Uncle had owned a shop for 40 years. Couldn't find a definite answer on here so I called him. He said that rubber hose collapses on the inside. The fluid is not strong enough to push it back out so fluid can't push through there. He was right! The parts cost $20

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