Powertrain Control Module (PCM) Programming

WARNING: This page does not describe the selected car, but rather 98 other vehicles, including the 2001 Saturn SW2, 2001 Saturn SL2, 2001 Saturn SL1, 2001 Saturn SL, and 2001 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If PCM has been replaced and correct Vehicle Identification Number (VIN) and mileage have not be entered into new PCM, Diagnostic Trouble Codes (DTC) will set in Anti-Lock Brake (ABS), air bag and Sentry Key Immobilizer Module (SKIM). Secret key data must be updated prior to starting vehicle.

Connect scan tool to Data Link Connector (DLC). For ABS and air bag systems, enter correct VIN and current mileage into new PCM. Use scan tool to erase ABS and air bag DTCs.
For SKIM, connect scan tool and select THEFT ALARM, SKIM then MISCELLANEOUS. Place SKIM in secured access mode by using 4-digit Personal Identification Number (PIN). Select UPDATE SECRET KEY DATA. SKIM data will automatically be transferred to PCM.
Attempt to start engine. If engine starts and runs, programming is complete. If engine is unable to start, verify that programming procedure has been completed and check for related Technical Service Bulletins (TSB).