Chevrolet Impala 2007 Impala Owner's Manual page 330

5.3L V8 Engine
A. Pressure Cap
B. Electric Engine Cooling Fans
C. Coolant Recovery Tank
330
CAUTION:
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An electric engine cooling fan under the
hood can start up even when the engine
is not running and can injure you. Keep
hands, clothing, and tools away from any
underhood electric fan.
If the coolant inside the coolant recovery tank is
boiling, do not do anything else until it cools down.
The vehicle should be parked on a level surface.
If your vehicle has one of the V6 engines, the
coolant recovery tank is located in the rear of the
engine compartment on the passenger's side
of the vehicle. If your vehicle has the 5.3L
V8 engine, the coolant recovery tank is located in
the rear of the engine compartment on the
driver's side of the vehicle. See Engine
Compartment Overview on page 308.