General Motors began using Allison transmissions in its Duramax diesel engine trucks starting in 2001. The partnership aimed to enhance the performance and reliability of GM's heavy-duty pickup trucks. The Duramax engine, paired with the Allison transmission, has been a key feature in GM's heavy-duty truck lineup since then.
gm bought allison in 1987
Every year of the 6.6L Duramax came with the Allison.
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Your serial number indicates that your Hi-Standard model 101 Dura-matic was made in the year 1969.The serial numbers for that year are from 2,030,405-2,172,356.
Dodge has never had the Allison trans in its trucks.
Davey Allison won the 1992 Daytona 500.
1908
*
1960
1500s
1965
1966