Underhood Compartment; Cooling System - GMC LYRIQ 2023 Owner's Manual

1. Windshield Washer Fluid
Reservoir. See Washer Fluid
0 314.
2. Hood Latch.
3. Brake Fluid Reservoir. See
Brake Fluid 0 316.

Cooling System

It is not necessary to regularly
check coolant unless a leak is
suspected or an unusual noise
is heard. A coolant loss could
indicate a problem. Have it
inspected and repaired by
your dealer.
During vehicle operation and
also during charging, the high
voltage battery cells in the
vehicle are kept within a
normal operating temperature
range. If the temperature rises
above this temperature, the
battery cooling system turns
on the air conditioning
compressor and cools the
coolant until the correct
temperature is reached. If the
temperature falls below this
temperature, a high voltage
heater, located outside the
battery on a cradle, heats the
coolant until the correct
temperature is reached.
The cooling system allows the
vehicle to maintain the correct
working temperature.
Checking Coolant
The coolant needs to be
replaced at the appropriate
interval. See Maintenance
Schedule 0 376.
The coolant reservoir is in the
underhood compartment. See

Underhood Compartment

Overview 0 312.
To access the coolant
reservoir under the hood, the
right side access cover needs
to be removed.
1. Park on a level surface and
turn the vehicle off.
2. Open the hood. See Hood
0 310.
Vehicle Care
3. The coolant reservoir is
under a cover and side
extension/shield in the
underhood compartment.
Unclip the right side of the
shield and remove the right
side access cover.
313