NHTSA Complaint #11517633 — 2014 CHEVROLET SILVERADO 1500

About 2 years after purchased (~2016), I was driving slowly in a parking lot and turned into a parking space. The brake pedal became very hard to press and the truck would not stop. I had to push extremely hard to get it to stop. I backed up and experienced the same problem. I put it in park, then the problem went away. There were no warning lights or indicators of a problem. I got a notice for a recall and took it into the dealer for repair in 2019. From 2019 through 2022, I have had 4 to 5 more incidents of the same problem. It seems to repeat when I slow down to a slow crawl with a trailer for added weight. I push the brakes while crawling and then the brake pedal gets hard to push and I loose brakes. Extremely dangerous, especially with added weight on a slight decline. I have found multiple instances with other customers reporting the same problem. Currently in contact with Chevy to resolve. I have reported the problem twice to the dealer and once to the "Customer Satisfaction" hotline. Chevy has confirmed that a recall was performed on the vehicle in 2019, but they cannot provide any information that the recall work fixed the problem or if they even tested that the fix was performed properly. Furthermore, they only report a "reprogramming" was done. No other work reported by Chevy, though, there are comments from other customers that a vacuum pump recall exists. They have yet to resolve the problem.