Chevrolet 2007 Cobalt Owner's Manual page 318

Notice: If you leave your radio or other
accessories on during the jump starting
procedure, they could be damaged. The repairs
would not be covered by your warranty.
Always turn off your radio and other
accessories when jump starting your vehicle.
3. Turn off the ignition on both vehicles.
Unplug unnecessary accessories plugged into
the cigarette lighter or the accessory power
outlet. Turn off the radio and all lamps that are
not needed. This will avoid sparks and help
save both batteries. And it could save
the radio!
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4. Open the hood on the other vehicle and
locate the positive (+) and negative ( )
terminal locations on that vehicle.
You will not see the battery of your vehicle
under the hood. It is located in the trunk. You
will not need to access your battery for
jump starting. Your vehicle has a remote
positive (+) and a remote negative ( ) jump
starting terminal.
The remote positive
terminal is located
under a red tethered
cap on the engine
compartment fuse block.
Lift the cap to access
the terminal.