Originally Posted by jewfromdahood
It's a 2003 Jeep Liberty Sport I've slowly been upgrading. Build date is August of 2002. And if it is a 45RFE... Is there a way to upgrade it to a 545RFE, because I have heard if I am not mistaken that it adds a fifth gear.
Might be worth it for me on the highway...
Count the number of bolts in the transmission pan. If you have 13 bolts you have the 42RLE; if you have 15 bolts you have the 45RFE.
As for changing the gearing - nope. That is set in the computer and as far as I know there is no way to change it. HOWEVER...
tjkj2002 may be able to offer more credible information than I can have since I've never had to contemplate the good fortune of having a 45RFE. My '03 Libby is blessed with the 42...
2003 Renegade, Black
- 3.7L, 42RLE, 4.10's, 4X Guard Trans skid, Factory Engine, T-case, Tank skids, Modded BoulderBars sliders, OME 927/948, Bilsteins, JBA A-Arms & 1/4" top plate, 1 extra rear iso/side, Moabs with Firestone Destination AT's 255/70-16