Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rac55f23681cd3a29ec235265f73c67895e36ada9 -rf401094683b7f3b082c41493f1a217c28a331e5c
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision ac55f23681cd3a29ec235265f73c67895e36ada9)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision f401094683b7f3b082c41493f1a217c28a331e5c)
@@ -882,6 +882,34 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The sendCommandResponseMsg function constructs a command response to HD
+ * and queues the msg for transmit on the appropriate CAN channel.
+ * @details Inputs: none
+ * @details Outputs: Command response msg constructed and queued.
+ * @param rejected T/F - is command rejected?
+ * @param rejectReason reason command was rejected (if not accepted)
+ * @return none
+ *************************************************************************/
+void sendCommandResponseMsg( BOOL rejected, U32 rejectReason )
+{
+    MESSAGE_T msg;
+    U08 *payloadPtr = msg.payload;
+
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_DG_COMMAND_RESPONSE;
+    msg.hdr.payloadLen = sizeof( BOOL ) + sizeof( U32 );
+
+    memcpy( payloadPtr, &rejected, sizeof( BOOL ) );
+    payloadPtr += sizeof( BOOL );
+    memcpy( payloadPtr, &rejectReason, 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_HD, ACK_REQUIRED );
+}
+
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************
@@ -1011,15 +1039,16 @@
     {
         BOOL startingHeater;
 
+        result = TRUE;
         memcpy( &startingHeater, message->payload, sizeof( U32 ) );
 
         if ( TRUE == startingHeater )
         {
-            result = startTrimmerHeaterCmd();
+            startTrimmerHeaterCmd();
         }
         else
         {
-            result = stopTrimmerHeaterCmd();
+            stopTrimmerHeaterCmd();
         }
     }