# 2002 Chevrolet Trailblazer LT

**URL:** <https://community.cartalk.com/t/2002-chevrolet-trailblazer-lt/48268>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, trailblazer\
**Created:** [May 2, 2010, 4:42pm UTC](https://community.cartalk.com/t/2002-chevrolet-trailblazer-lt/48268 "2010-05-02T16:42:47Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![LeslieC](https://avatars.discourse-cdn.com/v4/letter/l/90ced4/32.png) [@LeslieC](https://community.cartalk.com/u/LeslieC)\
**Post date:** [May 2, 2010, 4:42pm UTC](https://community.cartalk.com/t/2002-chevrolet-trailblazer-lt/48268/1 "2010-05-02T16:42:47Z")

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My car makes a rattling noise whenever I turn on the ac/heat system. It is very loud. The ac/heat works fine but the noise is overpowering. No one seems to know where it is coming from. The belt tensioner has been replaced three times.