If your vehicle is leaking antifreeze, the problem needs to be repaired promptly, before it causes much bigger, more costly issues.ĭespite its name, antifreeze does more than just keep your vehicle's radiator from freezing up in winter. Antifreeze plays a key part in keeping your engine running properly, so it's important to know if it's leaking. Always protect yourself with safety glasses and gloves when working with the coolant on your Grand Prix.If you've noticed an odd, sweet smell coming from your car after you shut the engine off you might have an antifreeze leak. An anti-freeze leak can cause the temp sensor to record high engine temperatures in a 2003 Pontiac Grand Prix. If you ignore a small coolant leak long enough, you will run out of coolant, which leads to an overheated engine and other serious, but highly avoidable, problems. This video shows you where the coolant reservoir, hoses and connections on your 2003 Grand Prix GT are located and the steps needed to fix minor leaks.Ī few things to note about coolant is that it is sweet tasting and highly toxic, so it can end up in the dog's stomach pretty quickly. Otherwise, your Grand Prix may have a radiator leak. However, a coolant leak (aka an antifreeze leak) is most likely to occur where the hoses connect to the engine or radiator. Coolant / antifreeze can leak from the reservoir, radiator or any hose, in 2003 Grand Prix with the 3.8 liter engine. Engine coolant (which is also called antifreeze or anti-freeze) moves through the inside of your Grand Prix engine and keeps it from overheating. Leaking coolant / antifreeze is one of the more common types of leaking fluid from Grand Prix engines. Follow the steps in this video to see how to fix minor coolant (antifreeze) leaks in your 2003 Pontiac Grand Prix.
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