Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rc0160362dc799802ec589d5b6cf4c2bd1face77e -r1463d830cefd58198bfc6d4ae3775ad0f2eb1d0b
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision c0160362dc799802ec589d5b6cf4c2bd1face77e)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 1463d830cefd58198bfc6d4ae3775ad0f2eb1d0b)
@@ -829,6 +829,68 @@
 
 /*********************************************************************//**
  * @brief
+ * The handleDGSerialNumberRequest function handles a request for DG serial
+ * number request.
+ * @details Inputs: none
+ * @details Outputs: message handled, response constructed and queued
+ * for transmit.
+ * @param message a pointer to the message to handle.
+ * @return none
+ *************************************************************************/
+void handleDGSerialNumberRequest( MESSAGE_T *message )
+{
+    MESSAGE_T msg;
+    DG_SYSTEM_RECORD_T system = getDGSystemRecord();
+    U08 *payloadPtr = msg.payload;
+
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_DG_SERIAL_NUMBER;
+
+    // Add 1 byte for null terminator
+    msg.hdr.payloadLen = MAX_TOP_LEVEL_SN_CHARS + 1;
+
+    // Fill message payload
+    memcpy( payloadPtr, &system.topLevelSN, MAX_TOP_LEVEL_SN_CHARS );
+    payloadPtr += MAX_TOP_LEVEL_SN_CHARS;
+    *payloadPtr = 0;
+
+    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_2_UI, ACK_REQUIRED );
+}
+
+/*********************************************************************//**
+ * @brief
+ * The handleDGServiceScheduleRequest function handles a request for DG
+ * service information.
+ * @details Inputs: none
+ * @details Outputs: message handled, response constructed and queued for
+ * transmit.
+ * @param message a pointer to the message to handle.
+ * @return none
+ *************************************************************************/
+void handleDGServiceScheduleRequest( MESSAGE_T *message )
+{
+    MESSAGE_T msg;
+    DG_SERVICE_RECORD_T payload = getDGServiceRecord();
+    U08 *payloadPtr = msg.payload;
+
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_DG_SERVICE_SCHEDULE_DATA;
+    msg.hdr.payloadLen = sizeof( U32 ) + sizeof( U32 );
+
+    // Fill message payload
+    memcpy( payloadPtr, &payload.lastServiceEpochDate, sizeof( U32 ) );
+    payloadPtr += sizeof( U32 );
+    memcpy( payloadPtr, &payload.serviceIntervalSeconds, sizeof( U32 ) );
+
+    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    serializeMessage( msg, COMM_BUFFER_OUT_CAN_DG_2_UI, ACK_REQUIRED );
+}
+
+/*********************************************************************//**
+ * @brief
  * The broadcastConductivityData function sends out conductivity data.
  * @details Inputs: none
  * @details Outputs: conductivity data message constructed and queued