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Discussion Starter #1
On my C7 there is a part that I can't identify. It is located just in front of the brake fluid reservoir. Cast aluminum with a vacuum line and a two wire connector attached.
Round about 5" tall. Vacuum pump??
 

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You are correct, it is a vacuum pump. It's purely to supply vacuum to the brake booster. It's not on all the time. There is a pressure sensor for the EBCM to monitor the vacuum and turn on the pump when needed.
 

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Discussion Starter #3
Thanks blu2k..
 

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It designed to make sure the brakes never fail because of lack of volume due to a stuck open throttle.
 
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