i upgraded to the build 99 and stuff but when i go to custom OS theres nothing in there??? but if i look in the file they seem to be there??? can some one plz shead some light for me thanks and also when i do a full reflash with the ecm in the truck what exactly do i need to do i seem isolate the class2 or sumthing and about a star connection or something ??? im confused can someone plz help me out i dont have the money for a bench harness thanks alot ppl