'04 6.0L Escalade AC Compressor
- Thread starter NotJLB
- Start date
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rockola1971
Full Access Member
Low refrigerant (You have a leak).
Refrigerant level is fine. Checking it, trying to add some, is when I could tell the compressor was not kicking in. But, that doesn't mean there's not a leak.
But, since you brought it up, it did have a leak a year ago, and I fixed it:
AC Schrader Valves
My low side Schrader valve is leaking (I can see it bubbling), so I am going to replace both the low and high valve cores. There's a tool ($40) so you don't have to evacuate the system, and a valve core kit is only $15. It includes 4 valve cores, one port (in case you need it), and the caps...
www.tahoeyukonforum.com
Last edited:
Mudsport96
Full Access Member
Turn ac on the coldest setting and use a stick to tap on the clutch. If it engages and stays going, you need a new clutch as the air gap is too wide for the coul to pull it in. I had to do this on my Silverado
As far as I'm concerned, it's working fine today. My wife is the one who reported the issue.
But, that's today, and in a haunted vehicle.
I would love to have an Escalade or Tahoe or Yukon where everything is not automated. Our 2000 Yukon was not, and always worked just fine, right up to the 225K miles when we got our first Escalade.
But, that's today, and in a haunted vehicle.
I would love to have an Escalade or Tahoe or Yukon where everything is not automated. Our 2000 Yukon was not, and always worked just fine, right up to the 225K miles when we got our first Escalade.
rockola1971
Full Access Member
How exactly can refrigerant pressures be correctly measured if the clutch isnt even engaging the compressor?????Refrigerant level is fine. Checking it, trying to add some, is when I could tell the compressor was not kicking in. But, that doesn't mean there's not a leak.
But, since you brought it up, it did have a leak a year ago, and I fixed it:
AC Schrader Valves
My low side Schrader valve is leaking (I can see it bubbling), so I am going to replace both the low and high valve cores. There's a tool ($40) so you don't have to evacuate the system, and a valve core kit is only $15. It includes 4 valve cores, one port (in case you need it), and the caps...
nonickatall
Full Access Member
You can easily check whether it's the refrigerant level by simply bypassing the pressure switch.
If the compressor starts, the refrigerant pressure is too low.
But I agree with Rockola1971. Most of the time it's the refrigerant level, but of course it can also be the magnetic clutch, the relay for the magnetic clutch or the climate control.
To check the magnetic Clutch, you can easily put 12 Volt on the compressor connector. If the clutch engage, then your problem is the relais or the control.
If the compressor starts, the refrigerant pressure is too low.
But I agree with Rockola1971. Most of the time it's the refrigerant level, but of course it can also be the magnetic clutch, the relay for the magnetic clutch or the climate control.
To check the magnetic Clutch, you can easily put 12 Volt on the compressor connector. If the clutch engage, then your problem is the relais or the control.
Airman68
Member
Agree with the faulty switch or refrigerant level. You can only check pressure with a gauge, not qty. With the unit full, should be 100psi or greater depending on ambient temperature. However, the amount of refrigerant is per the vehicle and options. Most of these are between 28-32oz or so, more with rear air. That cannot be checked by putting a gauge on it. 90% of the time it's low refrigerant even if you measure the correct pressure.
