I would do a salvage yard search and find a low mile CTD wrecked in the front and get one there. One site is car-part.com, not sure the def tank will be in the search criteria, just try a engine or something and find a place that has engines, probably has a car sitting as well.2014 Cruze diesel. Don't ask how, BUT, my lovely bride put just a small amount of Diesel in the DEF tank(she says a cup) now we are "dead in the water" Tech says it got in the filter and basically the entire insides of the tank will need to be replaced and, wait, it gets better, none available. We'll be waiting a month for the parts. Dealer can find NO parts available in anywhere.
Any ideas on how to move forward? Is there a Chevy customer service hotline? I have a month or so to figure it out I guess.
Sure am glad it is your lovely bride and not mine. :grin:
Hope that helps.