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2005 Tahoe Z71 Auto 4WD hum or whine
2005 Tahoe Z71: I've noticed a noise from under the truck when I use the Auto 4WD button as I decelerate and coast to a stop. It resembles the noise or hum of knobby tires on a smooth paved surface. Putting it back to 2WD eliminates the noise. Any ideas? Thanks in advance. John
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