Code 3500 Allison Transmissions

There’s one transmission code that has flashed up many times in our fleet with the Allison 3000 series transmissions…code #3500 which is a battery voltage interruption to the transmission ECU. What happens is the push button shift control does the fish eye thing and you lose shifting ability. The first place to go is (of… Continue reading Code 3500 Allison Transmissions