#####
module_name = 'dvm0'
ge = obj._module_manager._devide_app._interface._graph_editor
glyphs = filter(lambda g: g._labelList[-1] == module_name, ge._get_all_glyphs())
if glyphs:
ge._reload_module(glyphs[0].module_instance, glyphs[0])
#####
you can also find modules by type:
module_type = 'ITKReader'
glyphs = filter(lambda g: g._labelList[0] == module_type, ge._get_all_glyphs())