The Powertrain Control Module (PCM) on a 2001 Buick LeSabre is typically located on the driver's side of the engine compartment. It is mounted on the firewall, near the brake booster. To access it, you may need to remove some components or covers, as it can be somewhat tucked away. Always consult the vehicle's service manual for specific details and safety precautions before attempting to access or replace the PCM.
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