Thread: 606 go Kaboom.
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  #54  
Old 10-18-2013, 08:38 AM
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jay_bob jay_bob is offline
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I'm curious too.

Normally the drive by wire system and the transmission controller talk to each other and won't let the transmission downshift into something that would be dangerous.

Unless there was a failure in the transmission control system I cannot see how the car downshifted on its own. But you said there were no codes on the powertrain side.
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