Brake Master Cylinder problems of the 2010 GMC Sierra

A crack has formed on the passenger side of the dash board near the air bag. This should not occur in a vehicle of this age. The vehicle has been to the dealer on numerous occasions without any mention or action to repair. I will be contacting them on Monday about covering the repair. I believe that this is a manufacturing design issue and the dash should be replaced under warranty. In the month of June 2015, I had to have my master cylinder and brake booster replaced. The first occurrence was in January 2015 of this year and I filled the master cylinder with fluid because of the brake warning system came on and the brake fluid in the master cylinder was at the minimum level. The dealership advised tat it could be the result of low brakes and to keep an eye on it and if it loose brake fluid to bring it in. When it occur again in June 2015, I took it into the dealer. It was determine that the brake master cylinder was leaking into the brake booster causing the warning likes on the dash to illuminate. At just over 40,000 miles, this should be cover by gm as a warranty item. I believe I am due a refund.