# 2004 chevy silverado 2500 hd 3/4 ton

**URL:** <https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904>\
**Category:** Maintenance/Repairs\
**Created:** [July 19, 2008, 9:14am UTC](https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904 "2008-07-19T09:14:08Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![bsg1963](https://avatars.discourse-cdn.com/v4/letter/b/4491bb/32.png) [@bsg1963](https://community.cartalk.com/u/bsg1963)\
**Post date:** [July 19, 2008, 9:14am UTC](https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904/1 "2008-07-19T09:14:08Z")

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I noticed a tweeting sound coming from the front end when I start off but it seems to go away at speed,could it be the brakes or maybe the bearing,I changed the serpintine and air belts,lubed the pulleys thinking that was the problem.No noise at idle and if you rev it in park.

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**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\
**Post date:** [July 19, 2008, 3:06pm UTC](https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904/2 "2008-07-19T15:06:37Z")

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My inital thought is brake system generated noise.Time for a wheels off brake inspection.For my benifit,explain your “lube the pulleys” technique.

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**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [July 19, 2008, 11:33pm UTC](https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904/3 "2008-07-19T23:33:02Z")

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As the poster hasn’t replied to your question, I’ll take a stab at it by saying I think (s)he sprayed a lubricant from a can onto the pulley shaft/bearing to try and quiet the noise.

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**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [July 19, 2008, 11:36pm UTC](https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904/4 "2008-07-19T23:36:59Z")

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Now, my thought is a possible worn alternator pulley bearing (being a ‘tweeting’ sound, commonly referred to as a ‘chirping’ sound).

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**Author:** ![grampy](https://avatars.discourse-cdn.com/v4/letter/g/a9adbd/32.png) [@grampy](https://community.cartalk.com/u/grampy)\
**Post date:** [July 20, 2008, 4:58pm UTC](https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904/5 "2008-07-20T16:58:46Z")

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Need more info please

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**Author:** ![Roadrunner](https://avatars.discourse-cdn.com/v4/letter/r/d2c977/32.png) [@Roadrunner](https://community.cartalk.com/u/Roadrunner)\
**Post date:** [July 21, 2008, 2:30am UTC](https://community.cartalk.com/t/2004-chevy-silverado-2500-hd-3-4-ton/16904/6 "2008-07-21T02:30:13Z")

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Would be nice if the posters would let us know if they even READ our attempted help!