42rle transmission problems limp mode

New guy here. I'll just disclose lots of info here in case any of it matters.... 2005 Liberty 3.7L 175,000 miles 4x4 Stock Never abused, I've owned it for 8 years, bought with 75,000 miles. I work in Alaska 6 months a year, so Jeep sits in the yard for majority of the year...