viberation noise

stephsisich
0

Asked by stephsisich Jul 08, 2012 at 01:46 PM about the 2012 GMC Terrain SLE1 AWD

Question type: Maintenance & Repair

with window down at 30mph or more there is a real viberation noise. car is still new 3000mi

4 Answers

Rachel Kirby
245

if only one window is down it will make a weird noise. :)

Tom Demyan
127,835

It's called the "Helicopter effect" Most SUV's exhibt this when only one window is down, it has to do with the air pressure in the cabin. You must crack or open another window to eliminate or subside the effect. If I have the driver window open, I usually crack the rear passenger side by and 1" or so, so you get some cross ventilation.

Rachel Kirby
245

try opening another window & see if that works. if only one window is open you'll hear a weird noise. hope that helps :)

Richard Schroer
4,745

there is nothing wrong with the car- when you open the window you change air flow- it will still do it some with 2 windows open (I drive one).

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