where do I find my engin module?

expensive guess. i would have someone confirm this before replacing such an expensive part that may not fix your car. that what diags are for.

Roy

why do you suspect the module of being faulty? at least have the car scanned to see what you find then post here. as ASEMaster6371 says throwing parts with no diag can get very expensive. ecm's don't usually fail and if you buy it and install it, it's yours whether it fixes your problem or not.