Help solving GP-9 run problem

I obtained a GP-9 (6-18564)that states it is command control equipped. I do not have TMCC so I started it up using conventional ZW tranformer. I was able to run it around the track both forward and reverse, do whistle, bell etc. After a few minutes the engine suddenly stopped moving. I still have all the sounds. I have removed power (takes about 10 seconds to quit making sound) and then applied power again. Same situation: lights and sound but no movement. Any ideas on the problem and how to fix this?

Ken

12/30/119:06 PM

Original Post

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