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My experience is that the JK and the JL transmissions in 4-low auto will just upshift to a higher gear on steep grades even with periodic braking. They will also down-shift when I brake enough, but 4-low auto is not useful for compression braking. In high range auto at highway speeds the JL...

Removing the Tazer did not make the problem go away. I only got one down-hill run for about 15 minutes, so I may try again later to see if the transmission changes tuning over longer downhill runs. I'm comparing my 2016 Wrangler Willys to my 2020 Wrangler Rubicon. They both have the V-6...

I agree it's a great vehicle. The 8-speed transmission rivals the BMW transmissions I've had for smoothness and learning capabilities. The V-6 has good torque and fuel economy. I haven't gotten it in deep snow or mud yet, but it should do better than my JK which performed great when it's...

I'm going to the mountains tomorrow, so I think I'll remove the Tazer and see how mine acts. We can compare results.

I'm really surprised that your post is the only place on the internet I've found reference to this problem. I've not talked to Jeep, because my dealer is also clueless. The commonality that I see is that we both have Tazer minis. I've never totally removed the Tazer, but you said that you...

My 2020 Wrangler Rubicon has the same problem that XT Carol described above. Has anyone found an explanation or solution? My first Jeep was a 1949 Willys CJ when I was in high school. Most of the other 4WDs I've owned have been manual transmissions. I now have a 2000 Dodge Ram 2500, a 2016...