Thanks for the great expert advice guys.  I am new to DCC so it will have to sink in.
I called my local model train store and he said it is normal for the Bachmann
to produce electrical noise at crawl speed. 

Have a great weekend!

Martin 

Hey Guys,

I took the shell off and tried to isolate the noise.  It appears the noise is electrical, not grinding, although similar.  The noise is subdued/less than with the shell off however, but I still hear it.  I have a GP40 on DC and it does not make that electrical noise.  This noise on the DCC GP40 occurs at slow/crawling speed, and gets masked as speed increases.
My question then is, is this normal operation for the DCC engine?  Is it common for the DCC engines
to have an electrical noise at very slow speed? 

Martin 

Just received yesterday the Bachmann EZ Command Digital Command Control System with
DCC-Equipped HO Locomotive.  After putting the engine (GP40) on the track, I hear a grinding
noise from the engine.  I have a DC GP40 and it doesn't sound nearly as bad as the DCC engine.
Does anyone know about what this grinding noise is?  Should I send it back to Bachmann?
Thanks.

Martin

I can see the choices I have Rich from your excellent response.  The items of interest are for DCC,
which I don't have, but maybe for the future.  Thanks.

Martin

Hey guys.

Have a GP40 Bachman.  THe stock PCB has no inductors or capacitors, yet the old board in the
parts list has these electronic items.  What are they for?  lights?... something else?