2019 Chevrolet Bolt EV Has A Coolant Leak

Diagnosing Coolant Leak Issues in Your 2019 Chevrolet Bolt EV and Effective Repair Strategies

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
50% chance it's the
Loose Hose Connections
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25% chance it's the
Radiator
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25% chance it's the
Water Pump
The most common reasons a 2019 Chevrolet Bolt EV has a coolant leak are loose hose connections, a broken radiator, or a failed water pump.
  • Loose Hose Connections: A loose hose connection can lead to vacuum leaks or fluid loss, resulting in poor engine performance or overheating.
  • Radiator: A damaged or clogged radiator can impede coolant flow, resulting in engine overheating and reduced cooling efficiency.
  • Water Pump: A failing water pump can lead to coolant leaks or overheating due to inadequate circulation of coolant in the engine.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2019 Chevrolet Bolt EV has a coolant leak?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

A failing heater core may cause the car's interior to smell like engine coolant. The smell will become worse when the heater is turned on. The engine may also begin to run hotter until the vehicle is repaired.

The worst-case scenario is the engine overheating, which can cause extensive engine damage.

If the heater core is clogged, the air that blows when the heater is turned on will not be very hot.

A failing radiator can cause the engine to run hot or overheat. Most radiators are made of metal and plastic. The plastic parts can become brittle and crack over time, causing a leak of coolant (typically green or pink in color). All manufacturers have a recommended service interval for coolant renewal. As the coolant ages, the additives breakdown and being to form solid deposits. These deposits will build up in the passages of the cooling system and will eventually clog components, including the radiator. A leaking or clogged radiator must be replaced. Some automatic transmission cars will also have a transmission cooler integrated into the radiator. Lines going to and from the transmission circulate transmission fluid to help cool the transmission in heavy duty applications such as towing or off-roading. If this integrated cooler fails, it can allow transmission fluid and coolant to mix. This will causing shifting issues in addition to overheating.

A coolant leak may be noted from the hoses. Coolant hoses can be damaged by oil leaks, or age. This will lead to swelling or cracking, it is suggested to replace the hoses before they begin leaking to avoid potential overheating.

The two most common signs of a bad pump are leaks and noises.

Leaking water pumps can result in damage to the drive and timing belts, and cause the engine to overheat. A failed water pump can be caused by other problems in the cooling system, such as a bad thermostat, radiator or head gasket.

What are the steps to diagnose a coolant leak in a 2019 Chevrolet Bolt EV?

To effectively diagnose a coolant leak in your 2019 Chevrolet Bolt EV, start with a thorough visual inspection of the vehicle. Look for any visible signs of coolant pooling under the car or around critical components such as the radiator, hoses, and water pump. If you notice any wet spots or stains, this could indicate a leak. Next, perform a pressure test on the cooling system using a pressure tester; this will help identify any drops in pressure that suggest a leak is present. Regularly checking your coolant levels is also essential; a consistent drop in levels can be a clear sign of a leak. Pay close attention to the condition of hoses and connections, as wear and tear can lead to cracks or leaks. Additionally, inspect the radiator for any signs of damage. After parking your vehicle, look for coolant stains or puddles that may form underneath, as these can provide clues to the leak's location. If these steps do not reveal the source of the leak, or if the problem persists, it may be time to consult a qualified mechanic for a more in-depth diagnosis and repair. By following this structured approach, you can efficiently identify and address coolant leaks in your vehicle.

What are the common causes of a coolant leak in a 2019 Chevrolet Bolt EV?

When dealing with coolant leaks in a 2019 Chevrolet Bolt EV, it's essential to understand the common culprits that may be at play. One of the primary issues is damaged hoses, which can develop cracks or wear over time, leading to leaks. Additionally, a faulty radiator is another frequent source of coolant loss; corrosion or physical damage can compromise its integrity. The water pump, responsible for circulating coolant, can also be a problem if it develops a leak. Furthermore, a loose or damaged radiator cap can allow coolant to escape from the system, exacerbating the issue. In more severe cases, a cracked engine block may be the root cause of the leak, which requires immediate attention. To effectively address these problems, regular maintenance and inspections are crucial, as they can help identify leaks early and prevent overheating, ultimately protecting your vehicle's engine from potential damage.

How urgent is it to repair the coolant leak in a 2019 Chevrolet Bolt EV?

When it comes to repairing a coolant leak in your 2019 Chevrolet Bolt EV, urgency cannot be overstated. Coolant plays a vital role in maintaining optimal engine temperature, and a leak can quickly escalate into severe overheating, risking catastrophic engine damage. If you notice any signs of a coolant leak, such as puddles under your vehicle or a drop in coolant levels, it’s crucial to act swiftly. Ignoring these symptoms not only jeopardizes your engine's health but can also lead to decreased fuel efficiency and overall vehicle performance. Moreover, a coolant leak may indicate underlying issues within the cooling system, such as a failing radiator or water pump, which could result in even more costly repairs if left unaddressed. For DIY enthusiasts, tackling a coolant leak promptly not only safeguards your vehicle's integrity but also enhances your driving safety. Therefore, if you suspect a coolant leak, prioritize repairs to avoid more significant problems down the road.

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2019 Chevrolet Bolt EV Coolant Leak Causes & Repair Costs