87 1/2 ton 4x4 stalling

I have a 87 1/2 ton 4x4 with 5.7L engine. Vehicle runs perfect, except for when engine is warmed up and you come to a stop, it stalls out. Then it will start right back up and take off with no problem. Would this posibly be an injector that needs replaced or something else.

Check fuel pressure and clean the throtle body.