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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 308 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM - DEACTIVATION PROCEDURES)DISABLING & ACTIVATING AIR BAG SYSTEMGTOACTIVATING SYSTEM
1999 GMC Forward Control 5.7 R, Automatic

Activating System

1999 GMC Forward Control 5.7 R, AutomaticSECTION Activating System
WARNING: This page does not describe the selected car, but rather 63 other vehicles, including the 2004 Suzuki Swift +, 2004 Pontiac Vibe, 2004 Pontiac Sunfire, 2004 Pontiac Montana, and 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

To activate, remove key from ignition switch. Ensure SIR fuse is still removed from fuse block. In reverse order, connect SIR component SIR connectors to vehicle harness and install connector lock mechanisms. Install SIR fuse in fuse block. Staying away from both air bags, turn ignition switch to ON position. The AIR BAG indicator will flash then turn OFF.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.