2004 Gmc Sierra Brake Pedal Goes To Floor

System was only bled after the soggy pedal was found.

2004 gmc sierra brake pedal goes to floor.

Added front pads and pushed pucks back then went soggy on the pedal. It s important to not pump the pedal when doing the one part of the bleeding. The final reason for a brake pedal to go to the floor is failing axle bearing. Pedal offers some resistance but can be forced to the floor.

If the pedal is hard to push then maybe booster. Technically there are two main causes that would make the brake pedal sink all the way to the floor. 1 leak from brake line or brake caliper. Pumping does not bring it up.

One of the reasons is the brake system loses pressure from an external brake fluid leak. I looked all around the truck for leaks from brake fluid there is none and the brake resiviour sorry for the spelling is still full. Do not let the reservoir go empty. Axle bearings hold the brake rotor true without play while they both rotate.

If this bearing goes bad it will allow the brake rotor it move back and fourth which pushes the caliper piston back into the caliper creating an air gap. System was not opened. Bleed the rest of the system starting at the right rear and move to the left rear then right front and finally left front. Pedal takes substantial travel to stop the truck.

I stopped just inches from the other car. 2000 gmc sierra 5 3 vacuum booster i just had the same thing. A couple of ways to check. Took 100 feet to stop at 35 mph.

Truck brakes were fine. If you still have a low pedal clamp off the 3 flex lines and see if the pedal gets better. Was in a panic stop. Rear system is in check and adjusted properly.

I took the truck on a 30 minute drive the other day and on the way back home my brake light came on and the pedal goes almost to the floor. Reasons your brake pedal goes to the floor. The abs kicked in then the pedal dropped to the floor. With truck running pump the brake pedal several times and hold pressure on pedal after third pump.

Pedal has remained at the floor.