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Wiring diagrams Section: General Servicing - All Makes

A/c System Specifications

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A/c System General Servicing: Overview Chevrolet Pickup C3500

General Servicing - All Makes

Other Means Of Identification

Refrigerant R-134a is "milky" in appearance due to the mixture of refrigerant and lubricating oil. As the refrigerant and oil DO NOT exhibit a "clear" sight glass on a properly charged A/C system, most R-134a systems have no sight glass.