With truck running pump the brake pedal several times and hold pressure on pedal after third pump.
04 chevy express pedal to the floor.
My thinking it is the master cylinder.
I have hydro boost in my 2005.
The brakes don t show any fluid leakage.
He is wanting 1800 for the hydro boost pump flushing the lines etc.
Hey guys i have a 1992 k1500 nothing done to it completely stock.
The problem started when i had to apply the brakes quickly and that is when all the lights went on and the pedal went to the floor it was scary when it happened.
The truck brakes still work but the brake pedal has way too much travel now.
If you have exhausted all other problems check the axle bearings for play and replace any that are needed.
The pedal will go to the floor as the caliper fills with fluid to close the gap.
No change brakes still go to the floor they still work but they start working in the last 10 or so of pressing the pedal.
Double checked the vacuum lines thinking it might be the booster however the booster would make the brakes harder to push not softer and there weren t any issues with the lines.
Brake pedal going to the floor but no fluid leak.
2005 chevy 2500 hd 4x4 wt.
If the pedal is hard to push then maybe booster.
Mechanic says its the hydro boost i am not convinced.
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They told me when they were checking the truck out the brake pedal went to the floor.
04 chevrolet express van has intermittent brake pedal going to the floor.
Brake pedal going to the floor but no fluid leak.
A couple of ways to check.
In this case it will take two or more brake pedal pumps to regain its normal operation.
Does the pedal go to the floor with pressure on the pedal if so master cylinder.
I took the truck on a 30 minute drive the other day and on the way back home my brake light came on and.
If no pressure builds up when pumping maybe wheel cylinder or caliper.
My 04 hd had the pedal go to the floor but it was because the every hard line ruptured.
Now it is way more frequent.
Chevy truck forum silverado sierra gmc truck forums.
Attempts checks so far.
The pedal would just be hard to press.
I fing know if the test procedure is the same but for mine they say to the truck off pump the pedal 5 times to release the pressure built up then hold you foot on the brake pedal and start the truck.
Mar 22 2012 12 29am.
