Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -re65a2e67337ef5fff12de02db85ba101305fb006 -r6e07046677cba738be6f78b155f4f23120a43081
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision e65a2e67337ef5fff12de02db85ba101305fb006)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision 6e07046677cba738be6f78b155f4f23120a43081)
@@ -667,10 +667,55 @@
     result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_HD_2_DG, ACK_REQUIRED );
 
     return result;
-}
+}
+
+/*********************************************************************//**
+ * @brief
+ * The handleDGCmdResp function handles a DG command response message.
+ * @details Inputs: none
+ * @details Outputs: message handled, response constructed and queued for transmit.
+ * @param messagePtr pointer to the message to handle.
+ * @return none
+ *************************************************************************/
+void handleDGCmdResp( MESSAGE_T *messagePtr )
+{
+    BOOL result = FALSE;
 
+    if ( messagePtr->hdr.payloadLen == sizeof( DG_CMD_RESPONSE_T ) )
+    {
+        result = TRUE;
+        handleDGCommandResponse( &messagePtr->payload );
+    }
+
+    sendAckResponseMsg( (MSG_ID_T)messagePtr->hdr.msgID, COMM_BUFFER_OUT_CAN_HD_2_DG, result );
+}
+
 /*********************************************************************//**
  * @brief
+ * The handleDGOpMode function handles a DG broadcast of its current mode.
+ * @details Inputs: none
+ * @details Outputs: message handled, response constructed and queued for transmit.
+ * @param message pointer to the message to handle.
+ * @return none
+ *************************************************************************/
+void handleDGOpMode( MESSAGE_T *message )
+{
+    U32 payloadSize = sizeof(U32) + sizeof(U32);
+
+    if ( message->hdr.payloadLen == payloadSize )
+    {
+        U32 mode, subMode;
+
+        memcpy( &mode, message->payload, sizeof(U32) );
+        memcpy( &subMode, &message->payload[sizeof(U32)], sizeof(U32) );
+
+        setDGOpMode( mode, subMode );
+        checkInFromDG();  // TODO - here until we implement DG check-in w/ HD broadcast
+    }
+}
+
+/*********************************************************************//**
+ * @brief
  * The broadcastAccelData function constructs an accelerometer data msg to
  * be broadcast and queues the msg for transmit on the appropriate CAN channel.
  * @details Inputs: none
@@ -2078,30 +2123,6 @@
 
 /*********************************************************************//**
  * @brief
- * The handleDGOpMode function handles a DG broadcast of its current mode.
- * @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 handleDGOpMode( MESSAGE_T *message )
-{
-    U32 payloadSize = sizeof(U32) + sizeof(U32);
-
-    if ( message->hdr.payloadLen == payloadSize )
-    {
-        U32 mode, subMode;
-
-        memcpy( &mode, message->payload, sizeof(U32) );
-        memcpy( &subMode, &message->payload[sizeof(U32)], sizeof(U32) );
-
-        setDGOpMode( mode, subMode );
-        checkInFromDG();  // TODO - here until we implement DG check-in w/ HD broadcast
-    }
-}
-
-/*********************************************************************//**
- * @brief
  * The handleFWVersionRequest function handles a request for HD f/w version.
  * @details Inputs: none
  * @details Outputs: message handled, response constructed and queued for transmit.