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Discussion Starter · #1 ·
I just got to 2,000 miles on my 22 RS FWD. After I got in my car after work, I started it and I heard this noise that sounded like water filling up? Coming from the driver dash. Almost like a “swoosh” of water. This is new as I haven’t heard it at all until today. Any ideas? :/
This car drives me nuts lol
 

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2021Trailblazer RS AWD Scarlet Red Metallic
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It's just coolant, nothing to worry about. I've noticed it a few times after a cold start. Once the coolant starts flowing and heating up it goes away. My Colorado makes the same noise.
 

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Discussion Starter · #4 ·
I have an update on this. Took my car to the dealer. Coolant tank actually had a crack in the seam and it had been leaking out this entire time… most likely since I bought it. Yikes
 

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2021Trailblazer RS AWD Scarlet Red Metallic
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I have an update on this. Took my car to the dealer. Coolant tank actually had a crack in the seam and it had been leaking out this entire time… most likely since I bought it. Yikes
It happens, I believe one of the moderators here had a coolant hose leak repaired under warranty.
 
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