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Home >> Hummer >> 2009 >> H3 Alpha >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Wiring Systems And Power Management - Introduction >> Description and Operation >> Power Mode Description and Operation >> Fail-safe Operation >> Notes
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Fail-safe Operation: Notes

Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the body control module (BCM) fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.