How do i shut off ebrake light

Hello, That indicates you are low on brake fluid. If the brakes have not been replaced in the last few years, the brake fluid being low could just be indicative of normal brake pad wear. If the brakes are fairly recent, I encourage you to check for leaks rather than simply topping off the brake fluid. If any brake fluid leak is identified, repair is necessary immediately to prevent turning your Yukon into a 5000lb projectile. If your brake pads have worn to the point that the brake fluid is now low, inspect your brakes to see if they need replacement. Typically you can rely on the wear indicators to squeal when you are driving, but they don't always get installed with new brake pads.