Hard brake pedal from vacuum pump failure
SERVICE BRAKES
24 NHTSA complaints · 2023-03 → 2026-07
“I have found that when pressing my brake pedal, it gets very very hard and the truck doesn’t want to stop unless I’m practically standing on the brake pedal. My mechanic has been through the entire system and believes the issue stems from a faulty Vacuum pump”
“While tapping brakes to park in tight spaces or inching up in a drive thru, the brake pedal shudders and gets stiff. It's extremely hard to stop the truck”
“Vacuum pump intermittent failure. Not always but during periods of traffic the brakes get stiff and I have a service brake assist notification come on. Then it goes away and all braking is functional and fine”