WARNING: This page is about a different car, the 2005 Saturn Ion 3, 2005 Saturn Ion 2, and 2005 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
Install the oil level control valve into the transmission case (51). Push straight down on the center of the oil level control valve in order to prevent damage to the case bore.
Fig 1: View Of Oil Level Control Valve Into The Transmission Case