Peterbilt 548

Published

2026-09-01

Model years

2027–2027

Issue: On a small number of trucks, the rear brakes may take too long to apply and/or may release too slowly when the brake pedal is released. Canadian regulations require brakes to apply and release within a certain time. Safety Risk: Brakes that take too long to apply and/or that release too slowly could increase the risk of a crash. Corrective Actions: PACCAR will notify owners by mail and advise you to take your truck to a dealership to replace the front brake valve. The dealer will also replace the hose from the foot valve to the brake relay valve with one of another size.