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1. Turn the pressure cap
slowly counterclockwise.
If a hiss is heard, wait for
that to stop. A hiss means
there is still some
pressure left.
2. Keep turning the pressure
cap slowly and remove it.
3. If topping off the level in
the coolant surge tank, add
the proper mixture until
the level reaches the mark
on the front of the tank
and replace the cap.
Operate the vehicle.
Repeat steps 1 3, as
necessary.
If filling the system (such
as after servicing), follow
the Automatic Coolant
Service Fill Instructions.
Caution
If the pressure cap is not
tightly installed, coolant loss
and engine damage may
occur. Be sure the cap is
properly and tightly secured.
Automatic Coolant
Service Fill Instructions
This feature assists in filling
and removing air from the
cooling system after service of
components or when coolant
is added after being too low.
Vehicle Care
To activate the fill and air
removal process:
1. With a cold system, add
coolant to the indicated
mark on the surge tank.
2. Replace the cap on the
surge tank.
3. Connect the vehicle to a
battery charger.
4. Turn the ignition to Service
Mode. See Ignition
Positions 0 247.
5. Turn off the air
conditioning.
6. Set the parking brake.
7. At the same time, press
the accelerator and the
brake for automatic
transmission vehicles for
two seconds, then release.
At the end of the cycle, check
the coolant level in the surge
tank and add coolant if it is
low. Turn off the vehicle, allow
the Electronic Control Module
(ECM) to go to sleep, about
2 minutes, and repeat
Steps 3-7.
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