Brake Master replacement

Welcome to 2CarPros.

It sounds like a bad master cylinder. Have you checked that? If there are no leaks, that's my first suspect. take a look through this link.

https://www.2carpros.com/articles/brake-pedal-goes-to-the-floor

Here are directions in general for master cylinder replacement:

https://www.2carpros.com/articles/how-to-replace-a-brake-master-cylinder

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Here are the directions for replacement specific to your vehicle. The attached pictures correlate with the directions.

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Removal and Installation
Vehicle Brakes and Traction Control Hydraulic System Brake Master Cylinder Service and Repair Procedures Master Cylinder, Brakes Removal and Installation
REMOVAL AND INSTALLATION
REMOVAL
WARNING: BRAKE FLUID CONTAINS POLYGLYCOL ETHERS AND POLYGLYCOLS. AVOID CONTACT WITH EYES. WASH HANDS THOROUGHLY AFTER HANDLING. IF BRAKE FLUID CONTACTS EYES, FLUSH EYES WITH RUNNING WATER FOR 15 MINUTES. GET MEDICAL ATTENTION IF IRRITATION PERSISTS. IF TAKEN INTERNALLY, DRINK WATER AND INDUCE VOMITING. GET MEDICAL ATTENTION IMMEDIATELY.

pic 1

1. Disconnect the brake fluid level warning switch.

pic 2

2. If equipped with speed control, disconnect the brake pressure switch electrical connector.

pic 3

3. Disconnect the two brake lines and plug the lines and the brake master cylinder ports.
4. On vehicles equipped with the rear anti-lock brake system (RABS), remove the RABS valve.

pic 4

5. Remove the brake master cylinder
1 Remove the two brake master cylinder nuts
2 Remove the brake master cylinder

INSTALLATION

pic 5

1. Follow the removal procedure in reverse orders
- Bleed the brake system.

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Let me know if this helps.

Take care,
Joe