slow cooker pulled pork

1 (2 lb.) pork tenderloin

1 (12 oz.) can or bottle of root beer

1 (18 oz.) bottle of your favorite bbq sauce or sweet and sour mustard bbq sauce 

8 hamburger buns, split and lightly toasted 

place the pork tenderloin in a slow cooker; pour the rootbeer over the meat.  cover and cook on low until well cooked and pork shreds easily; 6-7 hours.  drain well.  

add sauce on top of meat on bun.