cm.closeGUI command is used to close CM gui.
what command used to close " carmaker modelcheck" window
You can pass TCL commands from matlab (there is an example about it in programmers guide from top of my head) to close the actual window. The command to use can be a specific proc that closes it, or use the “baloon” entry to close it (its basically a command that imitates the “click” on the close button.