OEM 2009 Chevrolet Tahoe Brake Master Cylinder

2009 Chevrolet Tahoe Brake Master Cylinder Parts and Q&A

• Q: How to replace the brake master cylinder (JD9) or the two-mode hybrid master cylinder on 2009 Chevrolet Tahoe?

  A: Before replacing the Brake Master Cylinder (JD9) or two-mode hybrid master cylinder you must turn the ignition off and leave it there without depressing the brake pedal. Then take out the brake fluid from the reservoir and place it in authorized storage. Unplug the brake fluid sensor electrical connection and separate both ends of the Brake Master Cylinder hose assembly. Position them on the side. To avoid fluid leaks tap the brake pipe primary fitting before sealing it with covers while also sealing the master cylinder outlet port. Repeat this process by disconnecting the left supply brake pipe fitting , right supply brake pipe fitting , right front brake pipe fitting , and left front brake pipe fitting , each with corresponding covers and seals. Seize off the Brake Master Cylinder nuts and remove them before pulling out the Brake Master Cylinder along with its master cylinder seal. To install the cylinder slide the Brake Master Cylinder seal onto its adapter first before placing the assembly with a properly seated seal onto the adapter. Use new master cylinder nuts and secure them to 33 nm (24 lb ft) torque setting. Fix the assembled brake connections between left front, right front, right supply, left supply, and primary brake lines with a torque of 30 nm. Join the Brake Master Cylinder reservoir return hose quick connect back to the supply hose quick connect then attach the Brake Fluid Level Sensor electrical connector. Put fluid in the Brake Master Cylinder reservoir then remove air from the hydraulic brake system.