ALDL Scan is an app for viewing ALDL data from 1995 and older GM vehicles. It can be used to view Analog parameters, Malfunction codes, or resetting the vehicle's ECM. ALDL Scan also provides for the recording of ALDL data to the user's Android device. ALDL Scan must be used in conjunction with the Bluetooth car adapter from 1320 Electronics. ALDL Scan is not compatible with other Bluetooth car adapters.