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Where is the orifice tube on a 2016 GMC Sierra?

The orifice tube on a 2016 GMC Sierra is located in the air conditioning system, specifically in the refrigerant line between the compressor and the expansion valve. The orifice tube is a small, cylindrical component that helps regulate the flow of refrigerant in the air conditioning system, ensuring proper cooling and efficient operation.


Understanding the Role of the Orifice Tube


The orifice tube is a critical component in the air conditioning system of a 2016 GMC Sierra. It serves as a metering device, controlling the flow of refrigerant from the high-pressure side of the system (the compressor) to the low-pressure side (the evaporator). This regulation of refrigerant flow helps maintain the proper pressure and temperature in the system, ensuring optimal cooling performance.


Location of the Orifice Tube


On a 2016 GMC Sierra, the orifice tube is typically located in the refrigerant line between the compressor and the expansion valve. 1 The expansion valve is responsible for further reducing the pressure and temperature of the refrigerant as it enters the evaporator coil, where heat is absorbed from the cabin air. 2


The orifice tube is usually a small, cylindrical component, often made of metal, that is installed inline with the refrigerant line. It is designed to restrict the flow of refrigerant, creating a pressure drop that helps the expansion valve function properly.


Importance of the Orifice Tube


The orifice tube plays a crucial role in the proper operation of the air conditioning system in a 2016 GMC Sierra. If the orifice tube becomes clogged or malfunctions, it can lead to various issues, such as:



  • Reduced cooling performance

  • Increased fuel consumption

  • Potential damage to the compressor or other components


Therefore, it is essential to ensure that the orifice tube is functioning correctly and is not obstructed or damaged. Regular maintenance and inspections of the air conditioning system, including the orifice tube, can help prevent these issues and maintain the optimal performance of the 2016 GMC Sierra's air conditioning system.

Which line has the orifice tube?


Its exact location can vary depending on the vehicle's make and model, but you can typically find the orifice tube between the condenser and the evaporator in the small liquid line.



Where is the orifice tube located on a 2016 Chevy Silverado?


The orifice tube is located on the inlet of the evaporator.



How do I know if my Chevy orifice tube is bad?


4 Bad Orifice Tube Symptoms To Watch Out For

  • The Compressor Is Not Able To Pull In The Specified Amount Of Refrigerant.
  • An Intermittent Loss Of Air Conditioning.
  • A Loud Hiss Coming From Inside The A/C System.
  • You Notice Bubbles Within The Sight Glass.
  • Conclusion.



When would it be necessary to replace an orifice tube?


If the A/C loop is contaminated, the orifice tube will become clogged, and you will need to replace the orifice tube. The orifice tube must always be replaced when another important part of the A/C loop is replaced (compressor, condenser, evaporator, or accumulator)



Where are most orifices located?


In a typical mammalian body such as the human body, the external body orifices are:

  • The nostrils, for breathing and the associated sense of smell.
  • The mouth, for eating, drinking, breathing, and vocalizations such as speech.
  • The ear canals, for the sense of hearing.



How to clean an orifice tube?


Clean the Orifice and Nozzle Body

  1. Open the lid and lock it in the upright position.
  2. Remove the nozzle body [2] from the inlet body [1].
  3. Remove the orifice [1] from the nozzle body.
  4. Submerge the orifice and nozzle body into an ultrasonic cleaner filled with white vinegar.



Where is the orifice tube located?


Have a question about the orifice tube location. It is located at the outlet of the condenser. As the liquid turns into gas, it has to go through a tube almost 4 feet before getting to the evaporator.



What are the symptoms of a clogged orifice tube?


A faulty orifice tube can manifest in several ways. You might notice a significant drop in cooling performance, unusual hissing noises, or even frost on the evaporator.



Can an orifice tube be cleaned?


Submerge the orifice and nozzle body into an ultrasonic cleaner filled with white vinegar. 5. Run the ultrasonic cleaner for 3–5 minutes or until clean.



Will AC work without an orifice tube?


The orifice tube allows for a higher flow of R-134 refrigerant during times when more cooling is needed, and a smaller flow of refrigerant when less cooling is needed. This balance of cooling flow is critical for the A/C to operate effectively.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.