Buick Regal: Cooling System
The cooling system allows the engine to maintain the correct working temperature.
When it is safe to lift the hood:
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2.0L L4 Turbo Engine
- Engine Cooling Fan (Out of View)
- Coolant Surge Tank and Pressure Cap
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3.6L V6 Engine
- Engine Cooling Fans (Out of View)
- Coolant Surge Tank and Pressure Cap
Warning: An underhood electric fan can start up even when the engine is not running and can cause injury.
Keep hands, clothing, and tools away from any underhood electric fan.
Warning: Do not touch heater or radiator hoses, or other engine parts.
They can be very hot and can burn you. Do not run the engine if there is a leak; all coolant could leak out. That could cause an engine fire and can burn you. Fix any leak before driving the vehicle.
Engine Coolant
The cooling system in the vehicle is filled with DEX-COOL engine coolant. This coolant is designed to remain in the vehicle for five years or 240 000 km (150,000 mi), whichever occurs first.
The following explains the cooling system and how to check and add coolant when it is low. If there is a problem with engine overheating.
What to Use
Warning: Plain water, or other liquids such as alcohol, can boil before the proper coolant mixture will. With plain water or the wrong mixture, the engine could get too hot but there would not be an overheat warning. The engine could catch fire and you or others could be burned.
Use a 50/50 mixture of clean, drinkable water and DEX-COOL coolant. If using this mixture, nothing else needs to be added.
This mixture:
- Gives freezing protection down to -37 ВєC (-34 ВєF), outside temperature.
- Gives boiling protection up to 129 ВєC (265 ВєF), engine temperature.
- Protects against rust and corrosion.
- Will not damage aluminum parts.
- Helps keep the proper engine temperature.
Caution: Do not use anything other than a mix of DEX-COOL coolant that meets GM Standard GMW3420 and clean, drinkable water. Anything else can cause damage to the engine cooling system and the vehicle, which would not be covered by the vehicle warranty.
Never dispose of engine coolant by putting it in the trash, pouring it on the ground, or into sewers, streams, or bodies of water. Have the coolant changed by an authorized service center, familiar with legal requirements regarding used coolant disposal. This will help protect the environment and your health.
READ NEXT:
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, do not d
Engine Overheating
The vehicle has an engine coolant
temperature gauge and an engine
coolant temperature warning light on
the instrument cluster to warn of
engine overheating.
If it is decided not to lift the hood
when
Washer Fluid
What to Use
When windshield washer fluid is
needed, be sure to read the
manufacturer's instructions before
use. If operating the vehicle in an
area where the temperature may fall
below freezing, use a
SEE MORE:
Engine Front Cover Replacement
Special Tools
EN-45059 Angular Meter
EN-50820 Front Crankshaft Seal Installer
KM-470 - B Angular Torque Gauge
Equivalent regional tools: Special Tools
Removal Procedure
1. Air Cleaner Assembly - Remove.
2. Camshaft Cover Replacement - Remove.
3. Engine Mount Replacement - Remove.
4. Cranksha
Automatic Day-Night Mirrors Malfunction
Diagnostic Instructions
Perform the Diagnostic System Check - Vehicle prior to using this
diagnostic procedure.
Review Strategy Based Diagnosis for an overview of the diagnostic
approach
Diagnostic Procedure Instructions provides an overview of each
diagnostic category
Diagnostic Fault In
