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Lighting bolt and check trans light on

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15 hours ago, JoeMack said:

@Deere Mack is there anyway you can help show me where this harness is?


 I'm having the same issue with my 2014 Mack Granite.


Good morning Joe. Mine was under warranty so it took mack and allison a couple days to figure it out.  All I can tell you is they told me it was the harness from the controller to the trans.  Good luck, wish I could help more

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