Help your A/C system track refrigerant pressure with this Four Seasons switch, part number 20915, a system-mounted HVAC pressure transducer that reads pressure in the air-conditioning system and sends that signal to the vehicle's controls. It is a direct-fit replacement for many vehicles, among them the 2003-2019 Chevrolet Silverado 1500, 2005-2021 Chevrolet Equinox and 2003-2019 GMC Sierra 1500. See the "Vehicles it fits" section for the full list. Four Seasons lists this part as both a pressure switch and a pressure transducer.
- Corrosion protection: Zinc coated to resist corrosion.
- Vehicle-specific: Built for specific vehicle applications, and the listed applications use one.
- Sealing parts: Comes with the gaskets, O-rings or seals needed for a proper replacement. Included item: 24606 (quantity 1).
- Easy to identify: Color coded so it is easy to identify.
Specifications: The fitting is a female M10 x 1.25 thread, and the round female electrical connector has 3 terminals. It is made of plastic and metal. The matching harness connector is 37235. Four Seasons rates this part as meeting or exceeding OEM standards. Country of origin: China.
Four Seasons engineers and tests its products for long, trouble-free service, backed by more than 50 years of mobile A/C experience. Signs this part may need replacing include A/C that blows warm, a compressor that does not engage or cycles erratically, or a stored pressure-sensor trouble code. Diagnose the cause first, because refrigerant level, wiring or other components can produce the same symptoms.
Frequently Asked Questions
What does an HVAC pressure transducer do?
It senses refrigerant pressure in the A/C system and sends an electrical signal to the vehicle's controls. They use that signal to help manage compressor operation.
Will this Equinox switch fit my 2005-2021 Chevrolet Equinox?
It is listed for the 2005-2021 Chevrolet Equinox with all engines, one per vehicle. Check the "Vehicles it fits" section to confirm your exact vehicle.
What are the fitting and connector specs?
It has a female M10 x 1.25 fitting thread and a round female connector with 3 terminals. The matching harness connector is 37235.
What comes in the box?
You get one pressure transducer plus included item 24606 (quantity 1). Four Seasons supplies the gaskets, O-rings or seals needed for a proper replacement.
How do I know if the A/C pressure transducer is bad?
Warm air from the vents, a compressor that won't engage or cycles erratically, or a stored pressure-sensor trouble code may be signs it needs replacing. Diagnose first, since other faults can cause the same symptoms.
