# 2001 GMC Sierra 2500HD 4x4 whine/whistle

**URL:** <https://community.cartalk.com/t/2001-gmc-sierra-2500hd-4x4-whine-whistle/87639>\
**Category:** Maintenance/Repairs\
**Created:** [October 13, 2014, 5:18pm UTC](https://community.cartalk.com/t/2001-gmc-sierra-2500hd-4x4-whine-whistle/87639 "2014-10-13T17:18:36Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mike\_from\_Troy\_Michi](https://avatars.discourse-cdn.com/v4/letter/m/e9c0ed/32.png) [@Mike\_from\_Troy\_Michi](https://community.cartalk.com/u/Mike_from_Troy_Michi)\
**Post date:** [October 13, 2014, 5:18pm UTC](https://community.cartalk.com/t/2001-gmc-sierra-2500hd-4x4-whine-whistle/87639/1 "2014-10-13T17:18:36Z")

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At about 50mph, start to get a whine/whistle from right rear (sounds kind of like a jet engine). Noise gets higher/lower as speed increases/decreases. Just started 1-2 weeks ago, 145k miles. Intermittent, but 85-90% of the time. Help please. Thanks

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**Author:** ![jesmed1](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/jesmed1/32/2097_2.png) [@jesmed1](https://community.cartalk.com/u/jesmed1)\
**Post date:** [October 13, 2014, 8:41pm UTC](https://community.cartalk.com/t/2001-gmc-sierra-2500hd-4x4-whine-whistle/87639/2 "2014-10-13T20:41:47Z")

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Sounds like a bad right rear wheel bearing.