"Service air suspension system immediately" warning appeared randomly on 2018 GC Summit at about 35K milage (Km). It went away after that, but as the weather got colder experienced a loud motor sound from under the cabin more frequently. The display would show the error as shown in video and dealership recommended I wait and watch.

A bit more research showed that it's a common issue with GC's quadra air suspension, and can be dangerous to operate the vehicle. I went back to dealership with videos and pictures of the incidents at different mileages, and they replaced the compressor under warranty. I didn't have to pay a penny for an otherwise $3000 parts and labor item. These are the times when you know how good it is to have warranty on your vehicle.

Sharing as it may help others with similar issue. Compressor replacement resolved the issue.

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