Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCADILLAC2005SRX AWD V8-4.6L VIN AREPAIR AND DIAGNOSISHEATING AND AIR CONDITIONINGSENSORS AND SWITCHES - HVACREFRIGERANT PRESSURE SENSOR / SWITCHSERVICE AND REPAIR
2005 Cadillac SRX AWD V8-4.6L VIN A
Refrigerant Pressure Sensor / Switch: Service and Repair
2005 Cadillac SRX AWD V8-4.6L VIN ASECTION Service and Repair
AIR CONDITIONING (A/C) REFRIGERANT PRESSURE SENSOR REPLACEMENT
TOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
IMPORTANT: There is no schrader valve under the pressure sensor.
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Remove the front air deflector retainers.
4. Remove the front air deflector.
5. Disconnect the electrical connector (1) from the A/C refrigerant pressure sensor (2).
6. Remove the A/C refrigerant pressure sensor.
INSTALLATION PROCEDURE
1. Install a new O-ring to the refrigerant pressure sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the A/C refrigerant pressure sensor (2).
Tighten
Tighten the sensor to 9.8 N.m (87 lb in).
3. Connect the electrical connector (1) to the A/C refrigerant pressure sensor.
4. Install the front air deflector.
5. Install the front air deflector retainers.
6. Lower the vehicle.
7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
8. Leak test the fittings of the component using J 39400-A.
TOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
IMPORTANT: There is no schrader valve under the pressure sensor.
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Raise and support the vehicle. Refer to Vehicle Lifting.
3. Remove the front air deflector retainers.
4. Remove the front air deflector.
5. Disconnect the electrical connector (1) from the A/C refrigerant pressure sensor (2).
6. Remove the A/C refrigerant pressure sensor.
INSTALLATION PROCEDURE
1. Install a new O-ring to the refrigerant pressure sensor.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the A/C refrigerant pressure sensor (2).
Tighten
Tighten the sensor to 9.8 N.m (87 lb in).
3. Connect the electrical connector (1) to the A/C refrigerant pressure sensor.
4. Install the front air deflector.
5. Install the front air deflector retainers.
6. Lower the vehicle.
7. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
8. Leak test the fittings of the component using J 39400-A.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.