Chevrolet 2011 Volt Collision Awareness Manual page 41

Inspection
The hybrid powertrain control module 2
will open the high voltage contactor
relays and disable the vehicle whenever
a SIR deployment occurs.
A complete inspection of the high
voltage system and components must
be performed in accordance with
service information if the vehicle has
been involved in a collision. The Crash
Event Detected condition will remain
active until cleared by the hybrid
powertrain control module 2 Clear
Secured High Voltage DTCs output
control function of the scan tool.
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