PIT4916J
Service Bulletin Details
Public Details for: PIT4916J
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 mi
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Bulletin No.: PIT4916J Published date: 07/30/2020 Preliminary Information PIT4916J Normal Characteristic - Wind Bu eting Noise With a Rear Window Down Models Brand: Model: Model Years: VIN: from Engine: to Transmissions: Chevrolet Equinox 2010 - 2021 All All All All GMC Terrain 2010 - 2021 All All All All Supersession Statement This PI was superseded to add Model Year 2021. Please discard PIT4916H. The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition / Concern Some customers may comment of a helicopter type noise when a rear window is lowered. This is known as buffeting and it is a low frequency, high volume wind noise that may occur in a moving vehicle with a rear window open. Recommendations / Instructions 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. Installation of accessory weather deflectors along the front door glass may also be effective in alleviating the buffeting noise. Customer Information Please communicate to the customer this condition is a normal operating characteristic of their vehicle. It will not impact the designed performance or reliability of the vehicle. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. © 2020 General Motors. All Rights Reserved.