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2002 gmc envoy_slt
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549 Posts
you have an excessive "air gap" and/or a weak compressor clutch field coil. Very common on this vintage. Remove the shim under the clutch plate or get a new field coil. Field coils are impossible to find so you may have to get a salvage yard compressor and take the field coil off of it. Otherwise you'll need to get a a new compressor and open the system. Than requires evacuation and recharge. Pull the shim out first. Then go from there. HTh c goood
 

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Registered
2002 gmc envoy_slt
Joined
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549 Posts
Removing the shim reduces the "air gap". It basically brings the clutch plate closer to the magnetic field coil, giving it a better chance to grab the plate and engage the compressor. If this doesn't solve the problem then you've got a very weak field coil. Pull the shim first then get back to us for the next step if it doesn't solve the problem. HTH c good
 
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