And if it does not have one, drill a bleed hole in the stat. Regardless, I ALWAYS pull the heater hose connection close to the stat (not the pump) off at the heater so the system will fill.
In a previous life, over at Moparts, I got into a HUGE argument about "how big" was acceptable. I can assure you that a 1/8" hole is NOT gonna adversely affect the system. Many factory bleeds are larger than that.