This is a randomized phase II trial that will examine the ability of the hydroxychloroquine to improve the clinical activity of a pre-operative regimen of gemcitabine and nab-paclitaxel in subjects with potentially resectable adenocarcinoma of the pancreas. Eligible subjects will receive 2 cycles of gemcitabine and nab-paclitaxel (day 1, 8, 15) with or without hydrocychloroquine followed by surgical resection. Primary endpoint will be histologic response as graded by Evans criteria. Secondary endpoints will be CA19-9 response and PET response. Pre and post treatment tissue biopsies will be obtained to assess for levels of autophagy in tumor, liver and peripheral blood.