2002 Chevy Silverado Clicking Noise on hot days

Tiny
SOPMOD
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 68,000 MILES
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
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Wednesday, July 28th, 2010 AT 11:19 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
It sounds like a bearing may be going bad in the compressor. Is the belt in good condition?
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Sunday, August 1st, 2010 AT 11:23 PM
Tiny
SOPMOD
  • MEMBER
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.
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Monday, August 2nd, 2010 AT 9:04 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Chances are it is the compressor.
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Tuesday, August 3rd, 2010 AT 12:51 AM

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