A/C pump always running?

2004 CHEVROLET TAHOE
212,623 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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RAGINGSOUL
  • MEMBER
  • 54 POSTS
When I first started up the vehicle the A/C compressor was clicking on and off and now it sounds like it is on all the time.

The vehicle listed above is an LT model.
Apr 3, 2023 at 3:38 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
Hi,

Based on your description, it sounds like the compressor clutch relay went bad. At least, that is where I would start.

The relay is in the under-hood fuse box. I attached a pic below showing its location. Remove it and switch it with a different relay in the box having the same part number. See if makes a difference. Also, when you remove the present one, check to make sure the connectors in the box are in good condition and free of corrosion, as well as give the relay a shake to see if anything sounds loose in it.

Let me know what you find or if you have other questions.

Take care,

Joe

See pic below.
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Apr 3, 2023 at 5:42 PM
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