What is the role of the HVAC pressure switch in the AC system on Cadillac CTS?

The pressure cycling switch, located on top of the hard line connecting the condenser to the air conditioning thermostatic expansion valve (TXV), is crucial in the AC system. It detects low refrigerant line pressure and turns the system off and on to increase the pressure. If the pressure becomes too high, the pressure cut-off switch shuts the system off. To replace the pressure cycling switch, an automotive air conditioning technician should discharge the system first. Then, unplug the electrical connector and unscrew the old switch. Lubricate the O-ring with clean refrigerant oil before installing the new switch. Screw it in until hand tight and then securely tighten. Reconnect the electrical connector and have the technician who discharged it evacuate, recharge, and leak test the system.

Genuine Cadillac CTS HVAC Pressure Switch

Air Pressure Switch

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8 HVAC Pressure Switches found

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Cadillac CTS Air Conditioner Refrigerant Pressure Sensor Assembly
Part Number: 13587668
$50.50 MSRP: $104.23
You Save: $53.73 (52%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly, A/C Refrigerant Pressure
- Replaces: 13502759, 22634172, 13502758, 22678731
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2019 Cadillac CTS | 2 DOOR COUPE, 4 DOOR, 4 DOOR (RHD), 4 DOOR PERFORMANCE SEDAN, 4 DOOR PLUS SEDAN, 4 DOOR PREMIUM SEDAN, 4 DOOR RHD, 4 DOOR SEDAN, 4 DOOR SEDAN(RHD), 4 DOOR STATION WAGON, 4 DOOR STATION WAGON(RHD), 4 DOOR V-SERIES SEDAN, 4 DOOR WAGON, 4 DOOR WAGON(RHD), V 2 DOOR COUPE, V 4 DOOR, V 4 DOOR SEDAN, V 4 DOOR WAGON | 4 Cyl 2.0L, 6 Cyl 3.0L, 6 Cyl 3.6L, 8 Cyl 6.2L
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Cadillac CTS Core,A/C Refrigerant Service Valve
Part Number: 3041827
$7.65 MSRP: $14.06
You Save: $6.41 (46%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: CORE, A/C Compressor Oil Test
- Replaces: 24436648
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 Cadillac CTS | 4 DOOR PERFORMANCE SEDAN, 4 DOOR PLUS SEDAN, 4 DOOR PREMIUM SEDAN, 4 DOOR SEDAN, 4 DOOR V-SERIES SEDAN | 4 Cyl 2.0L, 6 Cyl 3.6L, 8 Cyl 6.2L
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Cadillac CTS Switch,A/C Compressor Refrigerant Pressure
Part Number: 88958089
$64.76 MSRP: $122.18
You Save: $57.42 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SWITCH, A/C Electric Temperature and Motor Control; Pressure Sensor, Pressure Switch, Switch
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2008 Cadillac CTS | 4 DOOR, 4 DOOR RHD, 4 DOOR(RHD), V 4 DOOR | 6 Cyl 2.8L, 6 Cyl 3.6L, 8 Cyl 5.7L, 8 Cyl 6.0L
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Cadillac CTS Valve,A/C Refrigerant Service
Part Number: 52458184
$6.25 MSRP: $11.78
You Save: $5.53 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: VALVE, A/C Compressor Oil Test
- Replaces: 52458183
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2019 Cadillac CTS | 4 DOOR PERFORMANCE SEDAN, 4 DOOR PLUS SEDAN, 4 DOOR PREMIUM SEDAN | 4 Cyl 2.0L, 6 Cyl 3.6L
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Cadillac CTS Core Asm,A/C Refrigerant Service Valve
Part Number: 25872392
$9.35 MSRP: $17.64
You Save: $8.29 (47%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: CORE, A/C Compressor Oil Test
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2018-2019 Cadillac CTS | 4 DOOR PREMIUM SEDAN | 6 Cyl 3.6L
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Cadillac CTS Valve Assembly, A/C Refrigerant High Pressure Service
Part Number: 22748614
$29.29 MSRP: $55.26
You Save: $25.97 (47%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: VALVE, A/C Compressor Pressure Relief
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2016-2019 Cadillac CTS | 4 DOOR PERFORMANCE SEDAN, 4 DOOR PLUS SEDAN, 4 DOOR PREMIUM SEDAN | 4 Cyl 2.0L, 6 Cyl 3.6L
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Cadillac CTS Valve,A/C Refrigerant Service
Part Number: 88958095
$17.16 MSRP: $32.37
You Save: $15.21 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: VALVE, A/C Compressor
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2009-2014 Cadillac CTS | 2 DOOR COUPE, 4 DOOR, 4 DOOR (RHD), 4 DOOR RHD, 4 DOOR SEDAN, 4 DOOR SEDAN(RHD), 4 DOOR STATION WAGON, 4 DOOR STATION WAGON(RHD), 4 DOOR WAGON, 4 DOOR WAGON(RHD) | 6 Cyl 3.0L, 6 Cyl 3.6L
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Cadillac CTS Switch,A/C Compressor Refrigerant Pressure
Part Number: 25740417
Product Specifications
- Other Name: SWITCH, A/C Electric Temperature and Motor Control; Pressure Sensor, Pressure Switch
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004 Cadillac CTS | 4 DOOR, 4 DOOR(RHD) | 6 Cyl 3.2L

Cadillac CTS HVAC Pressure Switch

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Cadillac CTS HVAC Pressure Switch Parts Questions & Experts Answers

Core,A/C Refrigerant Service Valve
3041827
Q: What is the role of the HVAC pressure switch in the AC system on Cadillac CTS?
A:
The pressure cycling switch, located on top of the hard line connecting the condenser to the air conditioning thermostatic expansion valve (TXV), is crucial in the AC system. It detects low refrigerant line pressure and turns the system off and on to increase the pressure. If the pressure becomes too high, the pressure cut-off switch shuts the system off. To replace the pressure cycling switch, an automotive air conditioning technician should discharge the system first. Then, unplug the electrical connector and unscrew the old switch. Lubricate the O-ring with clean refrigerant oil before installing the new switch. Screw it in until hand tight and then securely tighten. Reconnect the electrical connector and have the technician who discharged it evacuate, recharge, and leak test the system.