Chevrolet Bolt EUV 2023 Cooling System User Guide
Cooling System
It is not necessary to regularly check coolant unless a leak is suspected or an unusual noise is heard. A coolant loss could indicate a problem. Have it inspected and repaired by your dealer. The following explains the cooling systems and how to check coolant levels.
- High Voltage Battery
- Single Power Inverter Module (SPIM), Accessory Power Module (APM), and Charger Module
- Cabin Heating
High Voltage Battery
During vehicle operation and also during charging, the high-voltage battery cells in the vehicle are kept within a normal operating temperature range. If the temperature rises above this temperature, the battery cooling system turns on the air conditioning compressor and cools the coolant until the correct temperature is reached. If the temperature falls below this temperature, a high-voltage heater, located outside the battery on a cradle, heats the coolant until the correct temperature is reached. Single Power Inverter Module (SPIM), Accessory Power Module (APM), and Charger Module The SPIM, APM, and charger module is cooled using a separate coolant loop. These modules are kept below a maximum temperature. If the temperature rises above this temperature, the electric cooling fan will turn on to cool the coolant.
Cabin Heating
Cabin heating is maintained by coolant heated by the Coolant Heater Control Module (CHCM), separate from the power electronics and battery coolant loops. This module heats the coolant based on temperature inputs from the cabin climate control systems.
Hybrid Cooling System Pressure Caps
The hybrid cooling system reservoirs have tamper-resistant pressure caps. The coolant should only be serviced by a qualified technician.
Checking Coolant
The coolant needs to be replaced at the appropriate interval. See Maintenance Schedule 0 293. The coolant reservoirs are in the underhood compartment. See Underhood Compartment Overview 0 239.
- Cabin Heating Coolant Reservoir
- High Voltage Battery Coolant Reservoir
- SPIM, APM, and Charger Module Coolant Reservoir
- Park on a level surface and turn the vehicle off.
- After the system has completely cooled, check that the coolant level is at the cold fill mark on the reservoirs.
- If the coolant level is not visible or needs to be adjusted within the reservoirs, contact your dealer.
Washer Fluid
What to Use
When windshield washer fluid is needed, be sure to read the manufacturer’s instructions before use. If operating the vehicle in an area where the temperature may fall below freezing, use a fluid that has sufficient protection against freezing.
Adding Washer Fluid
Open the cap with the washer symbol on it. Add washer fluid until the tank is full. See Underhood Compartment Overview 0 239 for the reservoir location.
Caution
- Do not use a washer fluid that contains any type of water-repellent coating. This can cause the wiper blades to chatter or skip.
- Do not use engine coolant (antifreeze) in the windshield washer. It can damage the windshield washer system and paint.
- Do not mix water with ready-to-use washer fluid. Water can cause the solution to freeze and damage the washer fluid tank and other parts of the washer system.
- When using concentrated washer fluid, follow the manufacturer’s instructions for adding water.
- Fill the washer fluid tank only three-quarters full when it is very cold.
This allows for fluid expansion if freezing occurs, which could damage the tank if it is completely full.
Brakes
Disc brake linings have built-in wear indicators that make a high-pitched warning sound when the brake linings are worn and new linings are needed. The sound can come and go or can be heard all the time when the vehicle is moving, except when applying the brake pedal firmly.
Warning
The brake wear warning sound means that soon the brakes will not work well.
That could lead to a crash. When the brake wear warning sound is heard, have the vehicle serviced.
Caution
Continuing to drive with worn-out brake linings could result in costly brake repairs.
Some driving conditions or climates can cause a brake squeal when the brakes are first applied, clearing up following several applications. This does not mean something is wrong with the brakes.
Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake linings for wear and evenly tighten wheel nuts in the proper sequence to torque specifications. See Capacities and Specifications 0 299. Brake pads should be replaced as complete axle sets.
Brake Pedal Travel
See your dealer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign that brake service may be required.
Replacing Brake System Parts
Always replace brake system parts with new, approved replacement parts. If this is not done, the brakes may not work properly. The braking performance can change in many ways if the wrong brake parts are installed or if the parts are improperly installed.
Brake Fluid
The brake master cylinder reservoir is filled with GM-approved DOT 4 brake fluid as indicated on the reservoir cap. See Underhood Compartment Overview 0 239 for the location of the reservoir.
Checking Brake Fluid
With the vehicle in P (Park) on a level surface, the brake fluid level should be between the minimum and maximum marks on the brake fluid reservoir.
There are only two reasons why the brake fluid level in the reservoir may go down:
- Normal brake lining wear. When new linings are installed, the fluid level goes back up.
- A fluid leak in the brake hydraulic system.
Have the brake hydraulic system fixed. With a leak, the brakes will not work well. Always clean the brake fluid reservoir cap and the area around the cap before removing it. Do not top off the brake fluid. Adding fluid does not correct a leak. If the fluid is added when the linings are worn, there will be too much fluid when new brake linings are installed. Add or remove fluid, as necessary, only when work is done on the brake hydraulic system. When the brake fluid falls to a low level, the brake warning light comes on. See Brake System Warning Light 0 89.
Brake fluid absorbs water over time which degrades the effectiveness of the brake fluid. Replace brake fluid at the specified intervals to prevent increased stopping distance. See Maintenance Schedule 0 293.
What to Add
Use only GM-approved DOT 4 brake fluid from a clean, sealed container. See Recommended Fluids and Lubricants 0 295.
Warning
The wrong or contaminated brake fluid could result in damage to the brake system. This could result in the loss of braking leading to a possible injury.
Always use the proper GM-approved brake fluid.
Caution
If the brake fluid is spilled on the vehicle’s painted surfaces, the paint finish can be damaged. Immediately wash off any painted surface.
Q &A
A1: The Chevrolet Bolt EUV 2023 is equipped with a liquid cooling system to regulate the temperature of various components, including the battery and motor.
A2: The cooling system circulates a coolant liquid through channels or pipes to absorb heat generated by the battery pack and other components. It then transfers the heat to a radiator for dissipation, helping to maintain optimal operating temperatures.
A3: The cooling system is designed to prevent overheating of critical components, such as the battery and electric motor, ensuring their longevity and optimal performance.
A4: The coolant replacement interval for the Chevrolet Bolt EUV 2023 can vary. It is recommended to consult the owner’s manual or reach out to a certified Chevrolet dealer for specific recommendations.
A5: The coolant level in the Chevrolet Bolt EUV 2023 can be checked through the coolant reservoir. It is important to consult the owner’s manual for the proper procedure and safety precautions before attempting to check or add coolant.
A6: The recommended coolant type for the Chevrolet Bolt EUV 2023 can be found in the owner’s manual or by contacting a certified Chevrolet dealer. It is important to use the correct coolant type to maintain the proper cooling system function.
A7: While it is possible to add coolant to the Chevrolet Bolt EUV 2023, it is recommended to consult the owner’s manual or seek professional assistance to ensure the correct coolant type and proper procedure are followed.
A8: If the coolant level in the Chevrolet Bolt EUV 2023 is low, it is important to have the system inspected for any leaks or potential issues. Adding coolant without addressing underlying problems may not resolve the issue.
A9: Extreme temperatures, both hot and cold, can affect the performance of the cooling system in the Chevrolet Bolt EUV 2023. It is designed to handle a wide range of temperatures, but extreme conditions may require additional precautions and monitoring.
A10: Regular maintenance and inspections are key to ensuring the cooling system is functioning properly. Following the manufacturer’s recommended maintenance schedule and addressing any signs of overheating or coolant leaks promptly is crucial.
A11: Signs of cooling system issues in the Chevrolet Bolt EUV 2023 may include overheating, coolant leaks, reduced performance, or unusual smells. If you notice any of these signs, it is important to have the vehicle inspected by a qualified technician.
A12: Yes, the cooling system plays a crucial role in maintaining the optimal temperature of the battery and other components, which can directly impact the range and efficiency of the Chevrolet Bolt EUV 2023. An efficient cooling system helps preserve battery life and ensures consistent performance.
A13: Regular maintenance tasks related to the cooling system of the Chevrolet Bolt EUV 2023 may include checking coolant levels, inspecting for leaks, and following the recommended coolant replacement intervals. It is important to consult the owner’s manual or seek professional assistance for specific maintenance procedures.
A14: Extreme heat or cold weather conditions can impact the performance of the cooling system in the Chevrolet Bolt EUV 2023. High temperatures can put additional strain on the system, while very cold temperatures may require the use of supplemental heating elements or specific coolant mixtures to ensure proper functioning. It is advisable to follow the manufacturer’s guidelines for operating the vehicle in extreme weather conditions.
A15: The lifespan of the cooling system in the Chevrolet Bolt EUV 2023 can vary depending on various factors such as usage, maintenance, and driving conditions. With regular maintenance and proper care, the cooling system should last for many years. However, if any issues or abnormalities are noticed, it is important to have the system inspected and serviced by a qualified technician.
Useful Links
View Full User Guide: Chevrolet Bolt EUV 2023 User
Download Manuals: https://www.chevrolet.com/support/vehicle/manuals-guides