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Afordeck

Allison 4000 transmission

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I stopped at a rest stop, shifted into park, five minutes later when I tried shifting into drive, the six flashed and the transmission would not engage. The six also flashed when I shifted into reverse but would not engage. I got out of the seat briefly to look for the manual. When I sat back down and tried shifting again, the transmission engaged and I was able to drive on down the rod. What might have been the problem? This transmission is in a 2003 Ultrasport.

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When I warm engine up on cruise control (about 1,000 rpm), it will do the same, until I cancel CC...then it's business as normal. :)

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