Fluid Level Indicator (4T80-E): Removal
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
Remove the fluid-level indicator from the transaxle. See Fig 1 . Rotate the indicator counterclockwise to unlock, then pull the indicator straight out of the transaxle. Inspect the O-ring seal on the indicator for nicks. Replace the seal, if damaged.