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2017 Silverado Buzz noise when opening driver door

Heb262

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Heb262 New Member

Heb262

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After truck has set overnight every morning when I open the drivers door there is a noticeable buzzing noise for 3 or 4 seconds. It didn't start day 1. But now I'm told it is normal. Anyone have any insight?

parthery Enthusiast

parthery

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Posted

Fuel pump pressurizing the system.  Makes the truck start quicker which takes some of the load off the battery.

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