99 cadillac escalade wont stay running runs for a second then cuts off?

Grant

New member
my buddy has a 99 escalade that someone tried to steal and screwed up the switch well it was replaced by a locksmith and when we try to start it it just start runs for a second or two then cuts off. anyone have any idea as to what might be wrong. or how to cut some wires and bypass something. oh and it a 5.7 vortec. i kno the the fuel is being cut off too cause it runs when u feed it gas with a hose
 
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