Korean American immigrants (KAI), one of the most underserved and understudied minority populations in the U.S., suffer from diabetes, which goes under-diagnosed, inadequately treated and has a potential to result in costly and tragic consequences. Language barriers, the lack of self-confidence, and diminished social support that accompany the acculturation process prevent KAI from improving their health-seeking behaviors. Our previous research has indicated that overwhelming numbers of KAI suffer not only from uncontrolled hyperglycemia but also from a loss of self-confidence and social isolation because of language and cultural barriers. They are in urgent need of an intervention to assist them in their efforts to achieve better glycemic control and restore their self-confidence in diabetes and health management so that they are able to adjust successfully in this new environment. Therefore, The purpose of this study is to assess the feasibility and efficacy of a culturally-tailored, comprehensive behavioral intervention program specially designed for linguistically challenged KAIs with type 2 DM.