Forum Discussion
_1Flyboy
Aug 02, 2020Explorer
2019 is the LAST year of the true Allison 6 speed transmission ( unless you get a 4500 of bigger) as they went to the new 10 speed in 2020 ( built by GM but “ branded” Allison )... Got a 2019 Duramax Dually for hauling our AF TC on ( we’re FT ) ....Not a complaint in 23000 miles...
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