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Hello, I'd be happy to help! First, realize with transmission concerns it's very difficult to diagnose without seeing it in person, and without seeing the data the TCM and PCM sees with a scan tool, so the most I can do is give you possible causes through experience. It is possible that the trans fluid temperature sensor is faulty, not extremely common on these but I have seen a few. Unfortunately, the most common for this issue with the commanders are internal transmission failures or torque converter failures, and because that one doesn't have a trans fluid dipstick you can't check fluid level either. What are your driving habits like? Just want to make sure you don't regularly tow something with this jeep because they are over sensitive to hard work as well.
Ok if it was the transmission smoking it's definitely not a temp sensor problem it's right about overheating. I would stop driving it as much as possible until you're prepared to take it to a transmission shop, there's likely damage from overheating. How far was it driven when it started smoking?
Ok, let me know what the codes are but I really wouldn't drive it more than that if you can help it, it's possible it will stop working altogether.
Never heard back from you on what you found. Also, please don't forget to rate, they won't compensate me unless I've been rated. Thank you!