# Compressor for air conditioner noise **URL:** \ **Category:** General Discussion\ **Tags:** gmc, 2500\ **Created:** [August 21, 2017, 11:15am UTC](https://community.cartalk.com/t/compressor-for-air-conditioner-noise/107090 "2017-08-21T11:15:42Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![badbearing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/badbearing/32/10683_2.png) [@badbearing](https://community.cartalk.com/u/badbearing)\ **Post date:** [August 21, 2017, 11:15am UTC](https://community.cartalk.com/t/compressor-for-air-conditioner-noise/107090/1 "2017-08-21T11:15:42Z")
Why does my compressor make a noise like dadadadadadadad…it works fine but makes the noise ---
**Author:** ![badbearing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/badbearing/32/10683_2.png) [@badbearing](https://community.cartalk.com/u/badbearing)\ **Post date:** [August 21, 2017, 11:16am UTC](https://community.cartalk.com/t/compressor-for-air-conditioner-noise/107090/2 "2017-08-21T11:16:24Z")
94 gmc 2500 ---
**Author:** ![kurtwm1](https://avatars.discourse-cdn.com/v4/letter/k/13edae/32.png) [@kurtwm1](https://community.cartalk.com/u/kurtwm1)\ **Post date:** [August 21, 2017, 1:42pm UTC](https://community.cartalk.com/t/compressor-for-air-conditioner-noise/107090/3 "2017-08-21T13:42:56Z")
There are several sources that could make that noise. 1. Bearings on idler pulley are failing 2. Compressor bearings failing 3. A/C clutch bearings failing. You could give it a short squirt of WD-40 around the clutch bearings and see if the noise changes. If yes, that could be the source of the noise. Don’t get it on the belt. ---
**Author:** ![badbearing](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/badbearing/32/10683_2.png) [@badbearing](https://community.cartalk.com/u/badbearing)\ **Post date:** [August 21, 2017, 6:10pm UTC](https://community.cartalk.com/t/compressor-for-air-conditioner-noise/107090/4 "2017-08-21T18:10:46Z")
Thank you Sir