Your Chevy’s cooling system plays a crucial role in keeping the engine at a safe operating temperature. If you’re noticing puddles under your car, a sweet smell from the engine bay, or rising temperature gauges, you might be dealing with a coolant leak. Ignoring it can lead to overheating, engine damage, and expensive repairs.
The good news? With the right approach, you can catch and fix a coolant leak before it becomes a major issue. Here’s how to spot the signs and what steps to take.
What Is Coolant and Why Is It Important?
Coolant (also known as antifreeze) is the fluid that circulates through your engine and radiator, absorbing heat and helping regulate engine temperature. It also prevents freezing in cold weather and helps protect metal parts from corrosion.
A proper coolant level ensures your engine doesn’t overheat or freeze—both of which can cause serious damage. That’s why it’s important to act quickly if you suspect a coolant leak.
Common Signs of a Coolant Leak
Identifying a coolant leak early can prevent bigger headaches down the line. Look for these symptoms:
• Puddle under the vehicle: Coolant often leaves behind a bright green, orange, or pink puddle under the front of the car.
• Sweet smell: A leaking coolant line or component can emit a sickly-sweet odor while driving or after parking.
• Overheating engine: If your temperature gauge rises quickly or you see steam from the hood, your cooling system might be compromised.
• Low coolant warning light: Newer Chevy models will alert you when coolant levels drop too low.
• Visible corrosion or residue: Dried coolant often leaves a white or chalky buildup on hoses or radiator parts.
Where Coolant Leaks Happen
Coolant can leak from several places in your Chevy, including:
• Radiator: Cracks or corrosion in the radiator can lead to leaks.
• Radiator hoses: Old or brittle hoses may develop small cracks or become loose at the clamps.
• Water pump: If the pump seal fails, coolant may leak near the front of the engine.
• Heater core: A leaking heater core can cause coolant to leak inside the vehicle, often under the dashboard.
• Head gasket: One of the most serious leaks, this can cause coolant to mix with engine oil—often signaled by white smoke from the exhaust.
How To Fix a Coolant Leak
1. Identify the Leak Source
With the engine cool, visually inspect the radiator, hoses, and connections for signs of wetness, staining, or corrosion. A pressure test can help pinpoint smaller leaks.
2. Top Off Coolant (Temporarily)
If you're in a pinch, adding coolant can help you get to a repair shop safely—but it's not a long-term fix. Always use the type of coolant recommended in your Chevy owner’s manual.
3. Replace Faulty Components
Small issues like a cracked hose or loose clamp are fairly easy DIY fixes. For larger issues like a leaking water pump or head gasket, it’s best to consult a professional technician.
4. Flush the System (If Necessary)
If the coolant appears dirty or contaminated, a system flush may be needed before refilling. This ensures new coolant circulates effectively and prevents future damage.
Visit Sarchione Chevy of Randolph for Expert Coolant Leak Repairs
Whether you’re topping off fluid weekly or seeing steam rise from under the hood, a coolant leak should never be ignored. At Sarchione Chevy of Randolph, our certified technicians can inspect your cooling system, identify the exact source of the leak, and make expert repairs using factory-approved parts and fluids.
From simple hose replacements to full radiator or water pump service, we’ll get your Chevy back in peak condition. While your vehicle is being serviced, feel free to browse our wide selection of new and pre-owned Chevy vehicles—perfect for those considering an upgrade.
Schedule your cooling system inspection today at Sarchione Chevy of Randolph, and let us help you drive with confidence and peace of mind.