I don't know where the info above is quoted from, but on the Chrysler website, it says this:
The Chrysler Pacifica provides a Best-in-Class maximum towing capacity of 3,600 pounds to help you transport your oversized toys.
In this brochure https://www.chrysler.ca/en_dir/pdf/2017 ... cifica.pdf
On page 7, lower right corner, it states this:
Whether it’s loading up the interior with home improvement supplies or garage sale furniture, or pulling the family camper or boat, you’ll easily get it done with a towing capacity of up to 1,633 kg (3,600 lb). When you’re pulling that much weight, it’s nice to know the available Trailer Sway Control (TSC)will help keep you safely on course.
The brochure also has info on the Pacifica Hybrid, and in other places clearly states when something is different for the Hybrid model. ie. "*Second-row Stow ’n Go and 8-passenger seating not available on Pacifica Hybrid."
I take that to mean the towing capacity is the same on both the standard hybrid Pacifica and the plug-in hybrid Pacifica Hybrid models.