Review on 🔧 GM Genuine Parts: High Quality Air Conditioning Orifice Tube - Model 15-5378 by Chris Russell

Throttle Body This is a very inexpensive component, but it is also an extremely important part of the air conditioning system. It serves two purposes: it filters out most of the contaminants from the oil and liquid refrigerant, and it also ensures the correct pressure drop, which is vital for the proper and efficient operation of an air conditioning system. Refrigerant pressure resulting in inefficient cabin air cooling and increased stress on the compressor and other components. A severely or completely clogged orifice tube will inevitably lead to compressor failure. Always replace the choke hose before charging your AC system. A few "extra" dollars spent and minimal additional repairs go a long way in ensuring the system is as efficient as possible and lasts as long as it should. This throttle tube is perfect for my 2003 GMC Yukon XL with rear air conditioning. I understand that there are two different sizes of throttle tubes and newer or different trucks use a "second design" that is larger in diameter. 0.500", if the line is larger, it means that the opening hose of the "2. Designs' is suitable for this. Overall I am pleased with the quality of this AC Delco part and would recommend it to anyone wishing to work on the air conditioning system. I have included a picture of the removed perforated tube showing a significant clog from very fine metal shavings Take it to a professional workshop to have the system flushed or drained by a certified professional using the correct equipment and procedures.