The C8 Corvette Z06 ushered in a return of a naturally-aspirated V8 engine for the track-focused car, and as such, it requires many more radiators to keep the LT6 cool on even the hottest track days. Unfortunately, we just learned about a potential issue with the LT6’s cooling system as some owners are seeing signs of a coolant leak. The good news is that the fix could be as simple as realigning a hose clamp.
A new Technical Service Bulletin was issued earlier this month which detailed how an engine coolant leak may be noticed on the ground or on the front of the engine on some 2023-24 Corvette Z06s after the car has been parked for a while. The TSB says the coolant leak is most often found around the water pump area at the bleed tube (Fig. 6, #1) or inlet hose (Fig. 6, #2):
If the coolant leak is found coming from the bleed tube area, check that the spring clamp is positioned correctly, and the hose is inserted all the way onto the bleed tube nipple.
If the coolant leak is determined to be at the water pump inlet hose, feel around the hose to ensure it is not rolled, and that it is fully seated on the tube.
Also inspect the position of the clamp. Ensure the hose clamp is not crooked and is positioned correctly. The clamp must be squared-up/aligned to the side edges of the hose surface. (Fig. 7) Secure the hose clamp bolt/screw to the correct torque specification.
If the hose needs to be repositioned, loosen the clamp to make adjustments, and then re-torque clamp. It is not necessary to replace the clamp unless it is damaged.
Refer to Bulletin #24-NA-177 for additional details.
If you are seeing a coolant leak and you’re not up to diagnosing yourself whether or not this is the issue, we suggest you make a service appointment at your Chevrolet dealership to have them investigate and remedy the issue.
Source:
MidEngineCorvetteForum.com
Related:
Chevy Sends Out a C8 Software Update Notification Which Requires a Visit to the Dealership
New Service Bulletin for 2024 Corvettes Fixes Issues with OTA Updates
New Service Bulletin Issued for 2023-2024 Corvette Transmissions Over Improperly Torqued Fasteners
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Management consultants in the US generally use the term “Kaizen” to cover a wide range of improvement practices primarily regarded as Japanese. For example, Total Quality Management and Just-In-Time Manufacturing.
The 4 key principles of Kaizen:
1. Every process can be improved.
2. Defects and process failures are usually the results of imperfect processes, not people.
3. Every person in the organization must have a role in improvement.
4. Small changes can have a significant impact.
Many thanks,
Ray
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