Supplemental Inflatable Restraint System Deactivation Procedures: Overview GMC Envoy I

SYSTEM OPERATION CHECK

1. Ensure negative battery cable or negative battery cable remote terminal is disconnected and isolated. Connect Diagnostic Read-Out Box III (DRB-III) scan tool to 16-pin Data Link Connector (DLC) located left of steering column at lower edge of instrument panel. Turn ignition switch to ON position and exit vehicle. Ensure latest version of correct DRB cartridge is being used.
2. After ensuring there is no one inside vehicle, connect negative battery cable or negative battery cable remote terminal. Using DRB, read and record active and any stored Diagnostic Trouble Codes (DTCs). Diagnose as necessary. Clear DTCs and recheck for DTCs. If a problem still exists DTC data will not clear.
3. Ignition switch should still be in ON position. Ensure no one is inside vehicle. From a position outside vehicle and away from air bag modules (in case of air bag deployment), turn ignition switch to OFF position for about 10 seconds, and then back to ON position. Observe AIR BAG indicator. It should come on for 6-8 seconds and then go out, indicating system is functioning properly.
4. If AIR BAG indicator fails to come on, comes on and stays on, or comes on while driving, a system malfunction exists. Perform air bag system self-diagnostics, and repair air bag system.

1. Turn ignition switch to RUN position. Observe AIR BAG indicator with air bags installed. If AIR BAG indicator comes on for approximately 6 seconds then goes out, air bag system is functioning properly and no fault codes exist.
2. If a fault code is detected in air bag system during system check, AIR BAG indicator will fail to light, stay on continuously or flash.
3. The AIR BAG indicator may not start flashing for approximately 30 seconds (16 seconds on Mark VIII) after ignition switch has been turned to RUN position. This time is required for diagnostic monitor to complete test air bag system.
4. If AIR BAG indicator is inoperative and a system fault exists, an audible tone of 5 sets of 5 beeps will be heard. If this occurs, air bag system service is required.

1. Ensure negative battery cable is disconnected and isolated. Connect Diagnostic Read-Out Box III (DRB-III) scan tool to 16-pin Data Link Connector (DLC) located left of steering column at lower edge of instrument panel. Turn ignition switch to ON position and exit vehicle. Ensure latest version of correct DRB cartridge is being used.
2. After ensuring there is no one inside vehicle, connect negative battery cable. Using DRB, read and record active and any stored Diagnostic Trouble Codes (DTCs). If any DTCs are present, diagnose as necessary. Clear DTCs and recheck for DTCs. If a problem still exists DTC data will not clear.
3. Ignition switch should still be in ON position. Ensure no one is inside vehicle. From a position outside vehicle and away from air bag modules (in case of air bag deployment), turn ignition switch to OFF position for about 10 seconds, and then back to ON position. Observe AIR BAG warning light. It should come on for 6-8 seconds and then go out, indicating system is functioning properly.
4. If AIR BAG warning light fails to come on, comes on and stays on, or comes on while driving, a system malfunction exists. Perform air bag system self-diagnostics, and repair air bag system.