WARNING: This page is about a different car, the 2003 Pontiac Grand Am and 2003 Oldsmobile Alero. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Instrument Panel Cluster (IPC)
Courtesy of GENERAL MOTORS CORP.
Fig 2: Powertrain Control Module (PCM) - 3.4L (LA1)