Powertrain Control Module (Pcm)
WARNING: This page is about a different car, the 2003 Buick Regal, 2003 Buick Century, 2002 Buick Regal, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
To program PCM for 3.1L engines, see POWERTRAIN CONTROL MODULE under PROGRAMMING in SELF-DIAGNOSTICS - 3.1L in FAULT ISOLATION under ENGINE PERFORMANCE. To program PCM for 3.8L engines, see POWERTRAIN CONTROL MODULE PROGRAMMING in SELF-DIAGNOSTICS - 3.8L in FAULT ISOLATION under ENGINE PERFORMANCE.