A. Groups did not differ in the number of food pellets earned during the last 3 sessions of self-administration. B. ASIC1A overexpression in the NAcore had no effect on food seeking during the cue-/context-driven food-seeking test after the homecage period. C. ASIC1A overexpression had no effect on active or inactive lever presses during extinction training. D-F. Rats showed significantly increased active lever pressing during food-primed, cued, and cued + food-primed reinstatement tests, respectively, but GFP and ASIC1A overexpressing rats did not differ from one another. *, p < 0.05 and **, p < 0.01 relative to extinction baseline. G-I. No differences existed in inactive lever presses during food-primed, cued, and cued + food-primed reinstatement, respectively.