My wife has a 2003 F-150 Lariat with about 230,000 miles, mostly highway with a fair amount of dirt roads and city. Frequently pulls a trailer but only 2000 lbs or so. Truck is in good shape and well maintained (she bought new), really not much reason to upgrade. However, she is worried that the transmission is getting close to end of life. No major signs of problems, just getting uneasy and a breakdown in some of the remote places we go would be very bad.
How much warning to you get when a transmission is about to die? Is it cheaper to have it rebuilt ahead of time?