Had our Kia Sedona tuned up & serviced prior to a trip from Portland to Yosemite to hike. Leaving home the check engine light came on and went on and off for the tntire trip. Upon our return we were...
If you aren't at a transmission specialist now, I highly recommend using one for the 2nd option. My go-to shop in Portland is Marsh Transmission in Tualatin. Very knowledgeable and very good work. I shipped all my rebuilds to them when I was running a shop in Corvallis.