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Does GM recommend coolant flush?

Yes, General Motors (GM) does recommend regular coolant flushes as part of the recommended maintenance schedule for their vehicles. Coolant flushes help to remove built-up deposits and contaminants from the cooling system, ensuring optimal performance and longevity of the engine.


Importance of Coolant Flushes


Over time, the coolant in a vehicle's cooling system can become contaminated with rust, scale, and other debris. This can lead to a decrease in the coolant's ability to effectively transfer heat, which can cause the engine to run hotter and potentially lead to overheating issues. Regularly flushing the cooling system and replacing the coolant helps to maintain the system's efficiency and prevent potential problems.


GM's Coolant Flush Recommendations


According to GM's maintenance guidelines, it is recommended to flush the cooling system and replace the coolant at the following intervals:



  • Every 30,000 miles or 24 months, whichever comes first, for most GM vehicles.

  • Every 150,000 miles or 120 months for vehicles equipped with long-life coolant.


It's important to note that these are general guidelines, and the specific coolant flush interval for your GM vehicle may vary based on the model, year, and driving conditions. Always refer to your owner's manual or consult with a GM-certified technician for the recommended maintenance schedule for your vehicle.


Benefits of Regular Coolant Flushes


Regularly flushing the cooling system and replacing the coolant offers several benefits, including:



  • Improved engine cooling: Fresh coolant helps to maintain optimal heat transfer, preventing overheating and engine damage.

  • Longer component lifespan: Removing contaminants from the cooling system can extend the life of components like the water pump, radiator, and hoses.

  • Corrosion prevention: The coolant contains additives that help to prevent corrosion of the cooling system components.

  • Compliance with warranty requirements: Adhering to the recommended coolant flush schedule can help to maintain your vehicle's warranty coverage.


By following GM's recommended coolant flush intervals, you can help to ensure the long-term health and performance of your vehicle's cooling system.

How long does GM Dexcool last?


It is recommended to change the coolant every five years or when above mileages or operating times are reached, whichever comes first. ACDelco DEX-COOL® provides long-life protection against all forms of corrosion by the use of optimised and patented organic corrosion inhibitors.



How can I tell if I need a coolant flush?


Vehicle Overheating and High Temperature Gauge
The primary role that coolant plays in your vehicle's functioning is keeping your engine temperatures low. If you find that your temperature gauge is always high and your engine is frequently overheating, chances are that you need a coolant flush.



Can a coolant flush cause problems?


Can a radiator flush cause problems? Yes and no. Yes, because a radiator flush is going to flush out any corrosion, debris, rust, and other contaminants. If the flush isn't thoroughly to clear all of that out, it can loosen up those things which could clog up the cooling system, including the radiator.



Does coolant really last 10 years?


Some modern coolants are designed to last for five years and even up to ten years, but this is influenced by: The type of coolant used. The age and make of your vehicle. Your driving habits.



Will a car run better after a coolant flush?


Coolant flush can provide numerous benefits, including enhanced health and protection. After the service, you should experience a noticeable engine cooling and performance improvement. These positive effects will be felt almost immediately and can help keep your vehicle running efficiently for a more extended period.



How often should I flush coolant in my GMC?


every 30,000 miles
Most experts recommend a coolant flush service every 30,000 miles to maintain optimal performance of your vehicle. By staying current with this service, you can help protect your cooling system and engine against damage.



How much should a coolant flush cost?


between $100 and $150
How Much Does a Coolant Flush Cost? The cost of a coolant flush depends on your vehicle's coolant capacity, and whether or not you are flushing the system with chemicals or soap before refilling it. Typically, you can expect to pay between $100 and $150 for this service on most vehicles.



At what mileage should you flush coolant?


30,000 miles
If your coolant contains silicates, you should usually consider changing it every two years or after driving 30,000 miles. However, if you choose extended drain coolants, they can last up to five years or 100,000 miles before needing a change.



How often do you change GM coolant?


Do a coolant flush and fill every two years or 30,000 miles. Newer cars with extended-life coolants should be flushed and filled every five years or 100,000 miles.



Is a coolant flush really necessary?


When To Flush Your Coolant. The simplest way to avoid overheating is to service the system according to your owner's manual recommendations. Flushing the coolant and replacing it with fresh fluid every two years or 30,000 miles is a good rule of thumb, but guidelines can vary from model to model.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.