Where is the PCM located on a 1998 Buick Riviera?

The PCM (Powertrain Control Module) on a 1998 Buick Riviera is typically located under the instrument panel, on the driver's side. However, it's often difficult to access without removing some panels. You'll likely need to consult a repair manual specific to your 1998 Buick Riviera to get precise location details and instructions on access. A Haynes or Chilton manual would be helpful.