So today I started up my truck and as I was driving I notice my brakes were very squishy. This is different from normal as they are always pretty stiff. I didn't think anything of it and parked it and walked away. About an hour later I started it back up and started driving. This time when I started it the ABS light and emergency brake light came on. (Double checked that the parking brake wasn't actually on). Also the brakes seemed so squishy to the point where my truck is having a hard time stopping at all. I checked the brake fluid reservoir and it was full and It didn't look like there was a leak anywhere. Could use some help as I am confused. Thanks!

 

Could be a small leak inside a drum. Time to pull each wheel off and start inspecting your brakes. That's where I'd start. You have the truck. Get back to us with the results after you inspect.