A/C compressor and engine fans are not spinning?

Tiny
COLEWILEY21
  • MEMBER
  • 2018 GMC SIERRA
  • 6.2L
  • V8
  • 4WD
  • AUTOMATIC
  • 138,000 MILES
Fans are not spinning, compressor clutch not engaging, fuses to my knowledge seem fine. Heat works A/C blows hot air.
Saturday, April 8th, 2023 AT 4:28 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,254 POSTS
Hi,

If the fuses are good, make sure the connection to the compressor clutch is in good condition and tight.

Keep in mind, there are a few things that can cause this to happen. If the low-pressure switch is faulty, it may not allow the compressor to engage.

Next, if the Freon is low, that will cause the pressure to drop and actuate the low-pressure switch to avoid it from engaging.

Do me a favor. Take a look through this link and let me know if anything is helpful. It goes through things to check and how to repair them when the system doesn't engage.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Let me know if that helps.

Take care and Happy Easter,

Joe
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Saturday, April 8th, 2023 AT 10:08 PM

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