Diagnostic Aids
WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
- If ignition 1 voltage for the SDM is outside of the normal operating voltage range (9-16 volts), the AIR BAG indicator will come ON solid with no DTC set.
- The loss of serial data communication between the SDM and the IPC will cause the AIR BAG indicator to come ON solid. Refer to DTC U1001-U1254 .