How to remove the A/C orifice tube on Chevrolet Express?

To remove the A/C orifice tube, start by discharging and recovering the refrigerant. Then, open the hood and locate the fitting for the A/C orifice tube. Hold the stationary fitting with one wrench and loosen the other fitting with another wrench. Inside the pipe leading to the evaporator, you will find the orifice tube with a fixed-diameter orifice and mesh filters at each end. Use needle-nose pliers to remove the orifice tube. It is important to check if the screens are not plugged, torn, and if the plastic housing over the screens is intact, as well as ensuring that the brass orifice inside the housing is unrestricted. For installation, insert the A/C orifice tube with the shorter end first towards the evaporator. Reconnect the refrigerant line and tighten the fitting securely. Finally, have the system evacuated, recharged, and leak-tested by a professional shop.

Genuine Chevrolet Express A/C Orifice Tube

A/C Hose

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Chevrolet Express Orifice,A/C Evaporator Tube
Part Number: 3033879
$10.10 MSRP: $17.69
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Product Specifications
- Other Name: ORIFICE, A/C Evaporator
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2024 Chevrolet Express | 1 TON CARGO EXPRESS, 1 TON CARGO SAVANA, 1 TON COMMERCIAL/RECREATIONAL VEHICLE EXPRESS, 1 TON COMMERCIAL/RV CUTAWAY, 1 TON PASSENGER, 1/2 TON CARGO EXPRESS, 1/2 TON CARGO SAVANA, 1/2 TON PASSENGER EXPRESS, 1/2 TON PASSENGER SAVANA, 3/4 TON CARGO EXPRESS, 3/4 TON CARGO SAVANA, 3/4 TON PASSENGER EXPRESS, 3/4 TON PASSENGER SAVANA, Van 3/4 Ton Cargo Express | 4 Cyl 2.8L Diesel, 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 4.8L Flex, 8 Cyl 5.0L, 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 5.7L, 8 Cyl 6.0L, 8 Cyl 6.0L Flex, 8 Cyl 6.5L Diesel, 8 Cyl 6.6L, 8 Cyl 6.6L Diesel, 8 Cyl 7.4L, 8 Cyl 8.1L

Chevrolet Express A/C Orifice Tube

The Chevrolet Express A/C Orifice Tube is the fixed metering orifice that controls the high-pressure liquid refrigerant from flooding the evaporator. This keeps the cabin air cool. The A/C Orifice Tube, in contrast to an adjustable expansion valve, is constructed without any moving parts. Its calibration forces refrigerant to drop in pressure once it gets to the low side. This causes the compressor to turn on or off to maintain system equilibrium. Through the distinction of the high and low sides, the A/C Orifice Tube is able to prevent evaporator freeze-up, which causes the vent temperatures to be uneven and might be felt by the driver while idling or cruising. Due to the simplicity of the tube, repairs will be easy on the Express. As time progresses, dirt and gummy oil can clog the A/C Orifice Tube, restricting flow, hiking pressures, and allowing condensation to ice the evaporator. Thus, its timely inspection or replacement is critical for dependable performance. The Chevrolet vans of previous and present generations have relied on the same straight, fixed-bore A/C Orifice Tube and have not switched over to the sensor-controlled expansion valve applied on some other platforms. As a result, the Express is easy to maintain and familiar to Chevrolet owners.

Each OEM Chevrolet Express A/C Orifice Tube we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Express A/C Orifice Tube Parts Questions & Experts Answers

Orifice,A/C Evaporator Tube
3033879
Q: How to remove the A/C orifice tube on Chevrolet Express?
A:
To remove the A/C orifice tube, start by discharging and recovering the refrigerant. Then, open the hood and locate the fitting for the A/C orifice tube. Hold the stationary fitting with one wrench and loosen the other fitting with another wrench. Inside the pipe leading to the evaporator, you will find the orifice tube with a fixed-diameter orifice and mesh filters at each end. Use needle-nose pliers to remove the orifice tube. It is important to check if the screens are not plugged, torn, and if the plastic housing over the screens is intact, as well as ensuring that the brass orifice inside the housing is unrestricted. For installation, insert the A/C orifice tube with the shorter end first towards the evaporator. Reconnect the refrigerant line and tighten the fitting securely. Finally, have the system evacuated, recharged, and leak-tested by a professional shop.