2023 Chevrolet Bolt EV Has A Coolant Leak

Diagnosing Coolant Leak Issues in Your 2023 Chevrolet Bolt EV and Effective Repair Strategies

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
50% chance it's the
Loose Hose Connections
0%
25% chance it's the
Radiator
0%
25% chance it's the
Water Pump
The most common reasons a 2023 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 2023 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 steps should I take to diagnose a coolant leak in my 2023 Chevrolet Bolt EV?

To diagnose a coolant leak in your 2023 Chevrolet Bolt EV, start by visually inspecting the area beneath your vehicle for any puddles of coolant, which typically appear in bright green, orange, or pink hues. Next, examine the radiator for any signs of leaks or corrosion, paying close attention to wet spots that may indicate a problem. If you suspect a more elusive leak, consider performing a pressure test on the cooling system; this method pressurizes the system and can reveal hidden leaks. Additionally, inspect all hoses and connections for cracks or loose fittings, tightening any that are not secure and replacing damaged hoses as needed. The water pump is another critical component to check, as it is a common source of leaks; look for any signs of leakage around it. Be alert for steam or a sweet odor while driving, as these can also signal a coolant leak. Finally, monitor your coolant levels regularly; if you find yourself frequently topping off the coolant without visible leaks, it may indicate a hidden issue that requires further investigation. By following this structured approach, you can effectively diagnose and address coolant leaks in your vehicle, ensuring its optimal performance and longevity.

What are the common causes of a coolant leak in a 2023 Chevrolet Bolt EV?

When dealing with coolant leaks in a 2023 Chevrolet Bolt EV, it's essential to understand the common problems that may arise. One of the primary culprits is damaged hoses, which can develop cracks or wear over time, leading to leaks. Additionally, a faulty radiator can contribute to coolant loss, especially if it shows signs of corrosion or physical damage. The water pump, responsible for circulating coolant, can also be a source of leaks as it ages. Another area to inspect is the radiator cap; if it is loose or damaged, it may fail to maintain the necessary pressure, resulting in coolant escaping. Lastly, while less common, a cracked engine block can lead to significant coolant leaks. Regular inspections and maintenance are crucial for identifying these issues early, ensuring the longevity of your vehicle and preventing overheating.

How urgent is it to repair a coolant leak in a 2023 Chevrolet Bolt EV?

When it comes to repairing a coolant leak in your 2023 Chevrolet Bolt EV, urgency cannot be overstated. Coolant plays a vital role in regulating engine temperature, and any leak can lead to overheating, which poses a serious risk of engine damage. If left unaddressed, the overheating can escalate, resulting in costly repairs that could have been easily avoided. Additionally, a coolant leak can compromise the overall performance and efficiency of your vehicle, leading to decreased fuel economy and potential safety hazards while driving. Therefore, it is crucial to act quickly and either diagnose the issue yourself or seek the expertise of a qualified mechanic. By addressing a coolant leak promptly, you not only protect your investment but also ensure the safe operation of your Chevrolet Bolt EV on the road.

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