The Powertrain Control Module (PCM) on a 1998 Buick Regal is typically located
under the dashboard, on the passenger side. However, it's not always easy to access and might be partially or fully hidden behind other components. You'll likely need to remove some trim pieces to get to it.
It's recommended to consult a repair manual specific to your 1998 Buick Regal for the exact location and access instructions. These manuals often have diagrams showing the PCM's location and how to reach it safely.
