Cadillac CT4 Owner's Manual page 298

Cadillac CT4 Owner Manual (GMNA-Localizing-MidEast-15283644) - 2022 -
CRC - 7/28/21
298 VEHICLE CARE
Warning (Continued)
could be burned. Never turn the cap
when the cooling system, including
the pressure cap, is hot. Wait for
the cooling system and pressure
cap to cool.
Caution
Failure to follow the specific
coolant fill procedure could cause
the engine to overheat and could
cause system damage. If coolant is
not visible in the surge tank,
contact your dealer.
If no problem is found, check to see if
coolant is visible in the coolant surge
tank. If coolant is visible but the
coolant level is not at or above the
indicated mark, add a 50/50 mixture
of clean, drinkable water and
DEX-COOL coolant at the coolant
surge tank, but be sure the cooling
system, including the coolant surge
tank pressure cap, is cool before you
do it.
2.0L L4 Engine and 3.6L
V6 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, add coolant to
the indicated mark on the
surge tank.
2. Replace the pressure cap on the
surge tank.
3. Activate the service feature:
3.1. Connect the vehicle to a
battery charger.
3.2. Turn the ignition to Service
Mode. See Ignition Positions
0 218.
3.3. Turn off the air conditioning.
3.4. Set the parking brake.