Deploying SCCM 2012 Client Through GPO

Hi,

I have pushed the SCCM 2012 client to most of my domain computers using client push. I have a number of computers that remain off most of the time and it's become difficult to get the agent installed. I would like to create a GPO to push the agent.

I was wondering, will creating a GPO to push the software interfere with the computers that already have the agent installed? Since i used client push will the GPO not recognize the software as installed and somehow corrupt the install?

Thanks for your help.