Pontiac 2004 Bonneville - Manual (Page 315)

12. Then replace the
pressure cap. At any
time during this
procedure if coolant
begins to flow out of the
filler neck, reinstall the
pressure cap.
Be sure the arrow on the pressure cap lines up
like this.
Power Steering Fluid
The power steering fluid reservoir is located in the rear
of the engine compartment on the passenger’s side
of the vehicle. See Engine Compartment Overview on
page 5-14 for reservoir location.
5-39