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The video above shows to how to fix minor coolant (anti freeze) leaks in your 2015 GMC Sierra 2500 HD. Before attempting to fix the coolant components on your Sierra 2500 HD, please check out our What is Leaking? to determine what type of fluid is leaking from your car. Engine coolant (which is also called anti-freeze or antifreeze) circulates through your Sierra 2500 HD's engine and keeps it from overheating. In 2015 Sierra 2500 HDs with the 6.0 liter engine, coolant leaks are most likely to occur where the hoses connect to the engine, but it can also leak from the reservoir or from the hoses. When fixing antifreeze leaks, it is important to check the condition of the hoses - they wear out over time and small cracks are only going to get bigger. The video above shows you where the coolant reservoir, hoses and connections on your 2015 Sierra 2500 HD Base are located and the steps needed to fix minor coolant leaks.
Coolant is highly toxic, so be sure to wear safety glasses and gloves and always clean up spills promptly as animals are attracted to the sweet taste of coolant. If you ignore a leaking coolant long enough, you will run out of coolant, which leads to overheated engines and other serious, but highly avoidable, problems. In many 2015 Sierra 2500 HDs, a coolant leak can be a precursor to a hose bursting or flying off, which severely limits how far you can drive before your engine overheats.
Leaking coolant is usually a sign that your water pump needs to be replaced. This video shows you how to quickly plug it2015 GMC Sierra 2500 HD 6.0L V8 FlexFuel Extended Cab Pickup
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