Cadillac CT4 Owner Manual (GMNA-Localizing-MidEast-15283644) - 2022 -
CRC - 7/28/21
VEHICLE CARE
299
3.5. At the same time, press the
accelerator and the brake
pedal for two seconds, then
release.
3.6. At the end of the cycle, check
the coolant level in the surge
tank and add coolant if it is
below the indicated mark.
Turn the ignition off, allow the
Electronic Control Module
(ECM) to go to sleep, about
two minutes, and repeat
Steps 3.2
–
3.6.
Listen for pump activation and
movement of the control valves while
watching the level of the coolant in
the surge tank. If the tank empties,
turn the ignition off, carefully remove
the pressure cap, refill to the indicated
mark, replace the pressure cap, and
repeat steps 3.2
–
3.6.
The fill and air removal process will
run for approximately 15 minutes.
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.
2.7L L4 Engine
Automatic Coolant Service Fill
Instructions
The vehicle is equipped with a service
feature that assists with filling and
removing air from the cooling system
after service of components or when
coolant is added after being to low.
To use this feature:
1. With a cold system unscrew the
cooling system air bleeder cap.
If coolant can be seen through the
bleeder move to Step 3.
2. Add coolant through the surge tank
until it is visible through the air
bleeder.
3. Replace the cooling system air
bleeder cap.
4. Add coolant to the indicated line
on the surge tank.
5. Replace the pressure cap on the
surge tank.
6. Activate the service feature:
6.1. Connect the vehicle to a
battery charger.
6.2. Turn the ignition to Service
Mode. See
.
6.3. Turn off the air conditioning.
6.4. Set the parking brake.
6.5. At the same time, press the
accelerator and the brake
pedal for two seconds, then
release.
6.6. At the end of the cycle, check
the coolant level in the surge
tank and add coolant if it is
below the indicated mark.
Turn the ignition off, carefully
remove the pressure cap, refill
to the indicated mark, replace
the pressure cap, and repeat
steps 6.2
–
6.6.
Listen for pump activation and
movement of the control valves while
watching the level of the coolant in
the surge tank. If the tank empties,
turn the ignition off, carefully remove