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Brake goes to the floor. Doubt it's a fluid leak. Want to figure it out rather than change parts blindly
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Question
Phil Elwood
Hi community I have a break problem. Hoping to find help here.
I wanted to get home tonight and when I pressed my break pedal to put the truck (04 Silverado 1500 LS 5.3) in D the pedal went to the floor hitting the break switch which turned on the warning. I tried pumping the pedal which made it a little bit stiffer but when I kept my foot on the pedal it would sink to the floor almost effortlessly. I bled breaks on older trucks before and it didn't feel like a fluid leak to me. Got out in the cold to check the fluid reservoir it was at the max level so all the way full. Tried some more but virtually no breaks. Walked around the truck with a flashlight (just in case) but all the wheels were dry no sign of fluid leak at the cylinders. Then I shut the truck off and pressed the break pedal. With the hood shut and all doors closed I could hear air being pushed out somewhere under the hood, again the pedal went to the floor. I was alone so I couldn't ask anyone to check where the air escaped unfortunately. I did it again a few times and it felt like I was pumping a tire with a foot pump, sounded like it too.
Very weird, it seems like it can't be a big problem so I'd like to know if anyone has a hunch or encountered anything like this. I'd prefer to find the issue and fix it rather than change parts blindly. It was really cold and I wanted to get home so I called a buddy to pick me up and didn't check things like blowing and sucking on the check valve. I hope I'll have time for that tomorrow but I would be happy if someone has suggestions to what I can check or which parts I should buy and replace first
Appreciate any help!
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