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1999-2005 Chevrolet/GMC/Cadillac All Full Size Trucks and Utilities Freon Leak Low Refrigerant Charge - keywords blows cap cooling cold compressor freon hose hvac leak line r134a

Subject:1999-2005 Chevrolet/GMC/Cadillac All Full Size Trucks and Utilities Freon Leak Low Refrigerant Charge

Models:



The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in the PI.

Condition/Concern:

When the high or low side port cap is removed, the gasket often will not be retained within the cap, and may fall to the floor and/or get lost. The cap with gasket is the primary seal for the high and low side ports. If the cap gasket is missing, it could cause a small refrigerant leak and over time loose enough freon to create a customer complaint.

Recommendation/Instructions:

When servicing an A/C system or inspecting for a freon leak, verify that the port cap gasket is present and properly installed.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

Models:

(1999-2005 All GM Light Duty Trucks and Utilities)