2002 Chevy Silverado Clicking Noise on hot days

2002 CHEVROLET SILVERADO
68,000 MILES • V8 • 4WD • AUTOMATIC
Avatar
SOPMOD
  • MEMBER
  • 2 POSTS
When I turn on my A/C during hot days, which is usually in high 80's and above degree days, I get a "clicking" noise. I have isolated the noise to A/C unit, for it only makes this noise when I turn on the A/C. This noise is very similar to a noise that we as kids used to produce by attaching a playing card or a thin piece of plastic to the bicycle frame to rub against the bicycle wheel spokes, creating a constant clicking sound. The noise last anywhere from 3 to 7 seconds and I have learned to mitigate the noise by controlling the throttle, either accel or decel. Again, it only makes this noise when the A/C is turned on during very hot days, while it does not usually occur during cooler days when I turn the AC on.

Any expertise advice is much appreciated.

Jesse
Jul 28, 2010 at 4:19 AM
Advertisement
Avatar
JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
It sounds like a bearing may be going bad in the compressor. Is the belt in good condition?
Aug 1, 2010 at 4:23 PM
Avatar
SOPMOD
  • MEMBER
  • 2 POSTS
Thank you very much for your reply...

The belts are in good condition with proper tension. As I have mentioned before, this sound only occurs during hot days when I turn-on the A/C. I have also isolated the noise to the right front corner of the vehicle, where the compressor and AC unit is located.
Aug 2, 2010 at 2:04 AM
Avatar
JACOBANDNICKOLAS
  • Experienced Mechanic
  • 110,240 POSTS
Chances are it is the compressor.
Aug 2, 2010 at 5:51 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.