I used to think the same, but I don't think so anymore. From everything I can tell, the transmission cooling is the same on all Pacificas, not something that's upgraded with the factory towing package. It's an oil-to-air cooler, and mine seems to do quite well when going down the highway, even in 90+ degree weather towing my boat.No felony as long as you use those mirror extenders:grin2: Just monitor you oil, coolant and transmission temps. Fortunately the Pacifica makes all these readily available. I think the transmission will probably be the weak link relative to towing. Keep it in the right temperature range.
The warmest I've ever seen the transmission is 205*, and that was in mid-90* weather in stop-and-go traffic for about 20 minutes with 5 of us in the car towing the boat. I can't get the engine over 232* either, and the bar gauge has never moved at all.