CTS-V V8-6.0L VIN U (2006)
DOT-3 brake fluid.
5. Install the seals, making sure they are fully seated.
6. Install the reservoir onto the master cylinder by pressing straight down by hand until pin holes are aligned.
7. Carefully tap in the reservoir retaining pins to secure the reservoir.
8. Fill the master cylinder reservoir. Refer to Master Cylinder Reservoir Filling.
9. Install the brake fluid level sensor.
10. Install the master cylinder to the vehicle.