Removal Procedure

WARNING: This page is about a different car, the 2003 Buick Regal and 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.

Drain the washer solvent from the washer solvent container.
Remove the right front fender liner. Refer to FRONT FENDER LINER REPLACEMENT in Body Front End.
Disconnect the washer solvent container level sensor electrical connector.

Fig 1: Disconnecting Washer Solvent Container Level Sensor Electrical Connector
Courtesy of GENERAL MOTORS CORP.
Using a small flat-bladed tool, remove the washer solvent level sensor from the washer solvent container.
Using a small flat-bladed tool, remove the seal from the washer solvent container.