How do you replace a Duramax DEF tank heater?
How do you replace a Duramax DEF tank heater? The procedure to replace the tank heater is the same for Duramax trucks from 2011-2016 as the location was unchanged. The DEF tank will need to be dropped for easiest access as the tank heater will be removed from the top of the tank. There are two straps that secure the tank in place, both will need to be removed. What happens to service exhaust system after Def heater tank replacement? 2011 duramax LML I was getting error code p20b9, replaced the reduction tank, DEF heater tank, whatever you want to...