What does grade braking do on an Allison series 1000?
What does grade braking do on an Allison series 1000? Allison Series 1000 Transmission Grade Braking Feature Everything you wanted to know about grade braking and more.. The grade-braking algorithm's primary purpose is to utilize engine braking to slow a heavy vehicle on steep grades in order to reduce wear on the traditional braking system. What are the symptoms of a faulty EGR valve? A faulty EGR valve can cause several trouble symptoms to appear. These directly relate to the operation of the engine and emission systems with no effect on the automatic overdrive (AOD) transmission, driveline or nonemission-related equipment....