Do all "HD" models have 4L80E?
#4
trucksred
just picked up on your ques.from 3-18 on the 4l80e.i'm on my 3rd truck with this trans. it's nice and heavy duty too!of course their is the allison you can get in the 2500hd with the 8.1 ltr,opp., or the duramax,std. i have a 1500hd lt 6.0 ccsb.
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