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September 20, 2021 Service bulletin

Visibility: glass, side/rear

Chevrolet technical service bulletin PIT4916K for 2010-2022 Chevrolet Equinox, 2010-2021 GMC Terrain and 2022 GMC Terrain Na.

Bulletin number
PIT4916K
Component
Visibility: glass, side/rear
Summary
This Preliminary Information communication provides information to the technician about vehicles that have may a helicopter type noise when a rear window is lowered. This is a normal characteristic of this vehicle, but the concern can be minimized by lowering a front door glass approximately 1 to 2 inches.

Owners of these vehicles have filed 1,647 complaints in the visibility category.

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