2011-2016 Duramax LML Vacuum Switch Plug
This plug is used to remove the vacuum switch on any 2011-2016 LML Duramax! The vacuum switch is prone for failure after installing a lift pump as they were not designed to withstand positive fuel pressure and will usually leak. Here is your fix!
Usually there will be no check engine light on an dedicated offroad LML Duramax but if you do receive an error code, you simply jump the electical connector with a paper clip to close the circuit.
***If you are running our CP3 convertered low pressure fuel line, that elinimates the whole vacuum switch assembly so this plug is not needed***