In the business environment, information technology plays an important role in of firms’ performance. information technology provides information flow which makes the supply chain more robust and resilient. There are plenty of researches about the role of SCM in companies, but few researches has been done the investment of IT in SCM and what extend it for to provide advantage in automotive companies. This study attempts to identify and determine of relations of components of information technology in supply chain management.Thus, the components identified according to review of literature with library study and by means of experts questionnaire was conducted toward validity, reliability, and selection of components. Eventually, seven components were selected for information technology in supply chain management. The Fuzzy DEMATEL method was applied to determine the interrelationships amongst all components. The results showed thatwere identified the component of Customer Relationship Management (CRM) as the most important component, and the other hand, Advanced Planning Systems (APS) as the most effectivecomponent.