Chevrolet 2011 Volt Collision Awareness Manual page 26

Underhood
The underhood electrical fuse block supplies fused
low voltage electrical power to common non-hybrid
underhood components, such as the Engine
Control Module (ECM). The fuse block also
supplies 12 volt power to hybrid components, such
as the drive motor / generator power inverter
module, Hybrid Powertrain Control Module 2
(HPCM 2), drive motor battery, and thermal
management components. The fuse block is
located in the left rear underhood area of the
vehicle.