My 2007 EL did not come with the towing pkg, however in looking over the specs I see the 4 x 4 EL comes with the 3.73 ratio rear end, the rear air adds the oversize 23+ quart radiator and it has a factory tranmsission cooler.
Obviously the welded hitches are the same. I have added the 7 pin plug.
What is the difference now between mine and the towing option? could the tranmission cooler be larger? Is the towing radiator larger than 23 quarts?
I will be towing 7,000# max but it will be in Mountains.
What suggestions would you have for me? Is there a drain plug in the 6 speed that can be replaced with a tranmission temp sensor?
Should I add an aftermarket H/D tranny cooler with a Fan? I see they are fairly inexpensive.
first you might want to start with the tranny cooler I know the HD tow package has a larger one also make sure you have a good brake controller we learned the hard way stopping everything is more important than getting it all going and finally if you are still worried look at chuck s posting for the OBD II gauge that plugs right in and can tell you tranny temps along with all sorts of good info and you should be set.