Her Jeep
New Member
Is it possible to switch out the 42rle for a 45rfe in a 2011 kk 4wd. I would prefer the extra gears for fuel saving sake.
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How much money you have? Better off taking the couple thousand $$$'s needed to do the swap(mostly custom computer programming) and put it towards alot of gas.Is it possible to switch out the 42rle for a 45rfe in a 2011 kk 4wd. I would prefer the extra gears for fuel saving sake.
The 42RLE and 45RFE/545RFE are 2 competely different trans.those transmissions have the same gear options. i think you mean the 545RFE? if you do it is the same as a 45RFE it just has a different program that adds another overdrive.
those transmissions have the same gear options. i think you mean the 545RFE? if you do it is the same as a 45RFE it just has a different program that adds another overdrive.
is it worth it to get your 45RFE programmed to a 545RFE in the liberty with a 3.7? the 3.7 is pretty marginal...so less RPM on the highway wouldnt be much better...