# 2000 Silverado 5.3L Noisy Fule Pressure Regulator

**URL:** <https://community.cartalk.com/t/2000-silverado-5-3l-noisy-fule-pressure-regulator/79022>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, silverado1500\
**Created:** [April 29, 2013, 11:19pm UTC](https://community.cartalk.com/t/2000-silverado-5-3l-noisy-fule-pressure-regulator/79022 "2013-04-29T23:19:28Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![mcole](https://avatars.discourse-cdn.com/v4/letter/m/7cd45c/32.png) [@mcole](https://community.cartalk.com/u/mcole)\
**Post date:** [April 29, 2013, 11:19pm UTC](https://community.cartalk.com/t/2000-silverado-5-3l-noisy-fule-pressure-regulator/79022/1 "2013-04-29T23:19:28Z")

</div>

I recently replaced the fuel pump and afterward started noticing a buzzing/whining sound coming from under the hood. The noise goes away when I remove the vacuum line from the fuel pressure regulator and after the car has been driven for 1/2 to 1 hour. Sometimes it comes back, sometime not, but it always is there at a cold start. Had the shop take a look and they said the fuel pump is ok and recommended replacing the fuel pressure regulator. I did but that but it did not solve it. Any ideas? I suppose I should check the fuel pressure.

---

<div class="post-metadata">

**Author:** ![mastermike](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@mastermike](https://community.cartalk.com/u/mastermike)\
**Post date:** [April 30, 2013, 8:29pm UTC](https://community.cartalk.com/t/2000-silverado-5-3l-noisy-fule-pressure-regulator/79022/2 "2013-04-30T20:29:03Z")

</div>

Wonder if you have a fuel line against something somewhere and vibration from pump traveling through it making it sound like its under hood?