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allison shift points
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  1. Allison OEM
    I have 125K on the truck. Until about 5,000 miles ago it shifted to 6th at around 55 mph when in tow mode and towing. Lately it won't shift until 68 mph. Since I travel at aroun 62-65 mph I never reach high gear and mpg suffers. Dealer says the usual - no codes, nothing wrong. They said...
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