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It's got to be super fucking cold to not engage OD. Count the shifts, I bet it goes 1, 2, 3, 4....wait while cold, then TC lock and 5th.
My 42re wouldn't shift into OD all the time in the winter. I've made hour long trips at 3000rpm because it wouldn't shift.

Maybe your definition of super fucking cold, and my definition of super fucking cold are different :jester:
 

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I should hope not...according to the FSM, the 45RFE has to be below -16ºF to not engage 4th gear. Basically, it uses limp mode at that temperature. PRN and 3rd gear is all you get, unless you manually shift to 2nd.
lol @ -16f...that's just barely getting cold...no where near "super fucking cold" :jester:

two different transmissions. can't really compare the two like that.
yeah, I didn't notice it was for the electronically controlled trans
 
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