Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -re23087e0c17f6ea81d60641fdb52121a8dd5a099 -r27f3db92495948d4c1192421c1b0c20338c4a034
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision e23087e0c17f6ea81d60641fdb52121a8dd5a099)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 27f3db92495948d4c1192421c1b0c20338c4a034)
@@ -534,6 +534,34 @@
 
     return result;
 }
+
+/*********************************************************************//**
+ * @brief
+ * The sendDGChangeValveSettingCommand function constructs a DG change valve
+ * setting message for DG and queues the msg for transmit on the appropriate CAN channel.
+ * @details Inputs: none
+ * @details Outputs: DG change valve setting msg constructed and queued.
+ * @param valveSettingCmd valve setting ID to change to
+ * @return TRUE if msg successfully queued for transmit, FALSE if not
+ *************************************************************************/
+BOOL sendDGChangeValveSettingCommand( U32 valveSettingCmd )
+{
+    BOOL result;
+    MESSAGE_T msg;
+    U08 *payloadPtr = msg.payload;
+
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_DG_CHANGE_VALVE_SETTING_CMD;
+    msg.hdr.payloadLen = sizeof( U32 );
+
+    memcpy( payloadPtr, &valveSettingCmd, sizeof( U32 ) );
+
+    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_HD_2_DG, ACK_REQUIRED );
+
+    return result;
+}
 
 /*********************************************************************//**
  * @brief
@@ -689,8 +717,11 @@
 
     if ( messagePtr->hdr.payloadLen == sizeof( DG_CMD_RESPONSE_T ) )
     {
+        DG_CMD_RESPONSE_T dgCmdResponse;
+
         result = TRUE;
-        handleDGCommandResponse( messagePtr->payload );
+        memcpy( &dgCmdResponse,  messagePtr->payload, sizeof( DG_CMD_RESPONSE_T ) );
+        handleDGCommandResponse( &dgCmdResponse );
     }
 
     sendAckResponseMsg( (MSG_ID_T)messagePtr->hdr.msgID, COMM_BUFFER_OUT_CAN_HD_2_DG, result );
@@ -3863,7 +3894,7 @@
     sendTestAckResponseMsg( (MSG_ID_T)message->hdr.msgID, result );
 }
 
-/*************************************************************************
+/*********************************************************************//**
  * @brief
  * The handleTestSetTreatmentParameter function handles a request to set
  * a specific treatment parameter value.