Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
2007 Cadillac Escalade EXT Fuel System Control Module
Try car-part.com.
It's a market place of salvage yards, of nothing else, the results of your search will let you know if that module is a direct interchange with other GM vehicles, or if it's a one year-one model fit.
