ECM Depot DBA Auto ECM Electronics has been in business since 1998. We are located in the Dallas/Fort Worth Metroplex at 2610 W Marshall Drive Suite 1, Grand Prairie, Texas 75051 . Our goal is to provide the best possible service to our customers. We diagnose and repair all ECMs according to the industry's most current information and OEM specifications. Our employees are well trained and have many years of experience in the unique field of auto electronics.