I just bought a brand new 2026 Z06. It only has 160 miles on it as of today. I noticed a coolant leak on the plastic pan that covers the bottom of the engine. It is the plastic pan with the cut outs for the oil pan drain and sump drain. I am going to lift the car up in the morning with the pan removed. I know that there is a bulletin (24-NA-177) relating to coolant leaks on the bleed tube and/or inlet hose. Does anyone know if this bulletin applies to a 2026? Anyone else have coolant leak issues?

 

my water pump went out in the first 1k mikes

 

Oh man that is not good! What year was your Z06?

 

​​​​​​​25

 

Hopefully a clamp. Seen that around here several times. Best of luck. No matter what it's a car and it'll get fixed!

 

I would assume its just a leaky line or a clamp somewhere in the system.

 

Mine was a clamp that was not attached to spec. 2025 Z06. Easy fix at the dealership. (I am lucky, I have a great corvette centric dealership)

 

This is not the new ownership experience we strive for at Cadillac. If you are interested, our team would like the chance to work alongside you during this repair and make sure it is documented on our end. When you have a moment, please email us at socialmedia@gm.com with your full VIN, name, and the name and address of your dealership. We hope to recieve an email from you. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.

 

This is not the new ownership experience we strive for at Chevrolet. If you are interested, our team would like the chance to work alongside you during this repair and make sure it is documented on our end. When you have a moment, please email us at socialmedia@gm.com with your full VIN, name, and the name and address of your dealership. We hope to recieve an email from you. By sending us a message, you consent to the information you provide being monitored and recorded by GM or those acting on GM’s behalf, subject to the GM Privacy Statement: https://www.gm.com/privacy-statement.

 

n/m

 

My brand new z06 was delivered to me via MM/Intercity Lines. The day it was delivered a little less than 2 months ago the weather was terrible, snowy/icy/rainy. He couldn't make it to my house because the trailer is 80 feet long fits 6/7 cars. I met the driver at a Best Buy on a local highway less than 10 minutes from my house and drove it straight home and wiped it down with a heavy spray of ceramic detailer and a lot of new/clean microfiber towels.

The first real drive I was able to take when the weather improved, came home and later on the next day I discovered a leak under the front PS tire. After much deliberation, MM sent their driver and picked the car. We thought the radiator was cracked because it would leak antifreeze when the underbody panel was removed and you pushed on the lower right radiator hose.

It turned out that the radiator hose wasn't seated fully, the top side was folded in and the clamp was on it when hot/pressurized it would leak a little.
MM replaced the hose and clamp, filled it with the proper coolant/water and ensured it was full sent it back to me. All has been perfect since.

 

OK. I will keep you guys updated....

 

I think I found the issue before sending it to the dealer. It looks like the clamp for the upper water pump inlet hose is messed up. It is as tight as it can go, but you can turn it by hand. I will have the dealer take care of it. I just had another question. Can someone provide me with a parts diagram that shows this hose please? When I do the parts sites online, I cant find a complete diagram. I wanted to get a part number for this hose and see if the claps are actually part of the hose. It is a short (maybe 4 inches) hose with hose clamps on both ends. There is also an insulator around the hose. Thanks!!

 

Disregard my last post. A friend was able to get me the parts diagram and part numbers. Thanks!