Diagnostic Energy Reserve Module (DERM): Notes
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1991 Oldsmobile Toronado, 1991 Cadillac Seville, 1991 Cadillac Eldorado, 1991 Buick Riviera, and 1991 Buick Reatta. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Before any repairs are performed, disconnect and shield battery ground. Because system has ability to retain voltage, remove SIR fuse and disconnect Yellow SIR connector at base of steering column. Wait 10 minutes before beginning service. All SIR system connectors use Connector Position Assurance (CPA) clips to ensure connector retention. Even if system is disconnected, use caution when working near steering column.