2024 GMC Acadia Coolant Capacity & Type

The 2024 GMC Acadia holds approximately 11.2 quarts (10.6 liters) of coolant in its cooling system.

Quick Answer

• Total Cooling System Capacity: Approximately 11.2 quarts (10.6 Liters)
• OEM Coolant Spec: DEX-COOL (Orange/Red, OAT - Organic Acid Technology) meeting GM Standard GMW3420 or GM 6277M.
• Mix Ratio: 50/50 Prediluted or concentrate mixed with distilled water.

Capacity by Engine Option

For the 2024 GMC Acadia, which typically comes with the 2.5L Turbo 4-cylinder engine, the cooling system capacity is approximately 11.2 quarts (10.6 liters).

Flush Interval

General recommendations for DEX-COOL coolant in a 2024 GMC Acadia are:

• Normal Duty: Typically every 5 years or 150,000 miles, whichever comes first.
• Severe Duty: If your driving conditions involve frequent towing, extreme temperatures, or prolonged idling, it's advisable to inspect your coolant more frequently and consider replacing it every 3 years or 45,000 miles.

Always refer to your 2024 GMC Acadia's owner's manual for the most precise maintenance schedule recommendations.

How to Refill & Bleed

Refilling and bleeding the cooling system on a 2024 GMC Acadia requires care to ensure all air is expelled. Here's a general procedure:

1. Safety First: Ensure the engine is completely cool before starting. Wear appropriate personal protective equipment (gloves, eye protection).
2. Drain (if flushing): If you are performing a full flush, drain the system completely. Otherwise, proceed to refill.
3. Refill: Slowly add the recommended 50/50 DEX-COOL coolant mixture to the coolant reservoir until it reaches the FULL COLD mark. The 2024 Acadia typically uses a surge tank/reservoir system.
4. Start Engine: Start the engine with the heater set to maximum heat and the fan on low. This helps open the heater core valve and allows coolant to circulate through it.
5. Burp the System: As the engine warms up, the thermostat will open, and coolant will begin to circulate. Monitor the coolant level in the reservoir and add more as needed. You may see air bubbles rising to the surface, indicating air is escaping the system.
6. Squeeze Hoses: Gently squeeze the upper and lower radiator hoses several times to help dislodge any trapped air bubbles.
7. Run to Temperature: Allow the engine to run until it reaches normal operating temperature. The electric cooling fans should cycle on and off at least once.
8. Cool Down & Recheck: Shut off the engine and allow it to cool completely (typically several hours or overnight). Once cool, recheck the coolant level in the reservoir and top off to the FULL COLD mark if necessary.
9. Monitor: For the next few drive cycles, keep an eye on the coolant level and temperature gauge to ensure no air pockets remain and the system is operating correctly.

Note: The 2024 GMC Acadia's cooling system is generally designed to self-bleed effectively, but patience during the refilling process is key to preventing air pockets.

Common Cooling System Issues

While the 2024 GMC Acadia is a new model, based on previous generations and similar GM platforms, some common cooling system considerations can include:

• Coolant Leaks: Over time, hoses, gaskets, the radiator, or water pump seals can develop leaks. Regularly inspect for puddles under the vehicle or a sweet smell. Keep an eye on your coolant reservoir level.
• Water Pump Failure: The water pump is a critical component; signs of failure can include a whining noise, coolant leaks, or engine overheating.
• Thermostat Malfunction: A faulty thermostat can cause the engine to run too hot (stuck closed) or too cold (stuck open), impacting efficiency and potentially leading to damage.
• Radiator Fan Issues: The electric cooling fans are crucial for maintaining temperature, especially in slow traffic. Fan motor failure or wiring issues can lead to overheating.
• Heater Core Clogging: Less common in newer vehicles, but a clogged heater core can result in a lack of cabin heat.
• Degradation of DEX-COOL: While long-lasting, if DEX-COOL is mixed with incompatible coolants or not maintained, it can break down, leading to sludge formation and corrosion.

Regular maintenance and using the correct DEX-COOL coolant are paramount to avoiding these issues and ensuring the longevity of your Acadia's cooling system.

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