WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to he step number on the diagnostic table.
3. If the scan tool indicates Closed in Step 2, and Open when the TCC brake switch is disconnected, the switch is stuck closed.