I have a 2021 Sierra 1500 Denali just purchased and before I purchased I test drove it and the brakes were very spongy and very hard to stop but I figured it was the brakes so they discounted the price of the truck. Long story short, I went home Did front and rear brakes and the problem is the same. I want to bring it back to them and have them fix the issue, but maybe it’s something I can do. Truck has 80,000 miles no leaks no check engine lights no nothing hopefully someone can chime in and give me an idea on what’s going on. Thank you.
