How to Replace AC Compressor 2010-2016 Cadillac SRX

Introduction

This tutorial provides a comprehensive guide on how to replace the AC compressor in a 2010-2016 Cadillac SRX. The AC compressor is essential for circulating refrigerant throughout the vehicle's air conditioning system. If your compressor has failed, follow these steps to replace it safely and effectively.

Step 1: Recover the Refrigerant

• Before starting the replacement, ensure that the AC system refrigerant is properly removed by a qualified technician.
• Locate the high side Schrader valve (top) and low side Schrader valve (bottom) for the refrigerant recovery.

Step 2: Access the Compressor

• Remove the passenger front tire to gain access to the fender well.
• Use a 22mm socket to remove the lug nuts.
• Take out the fender skirt by removing:
  • Six Phillips head screws.
  • Three push pins (use a trim tool for easier removal).
• Carefully pull out the fender well cover to expose the AC compressor.

Step 3: Remove the AC Compressor

• Use a flat blade screwdriver to remove the clips securing the plastic shield over the compressor.
• With a half-inch breaker bar, relieve tension on the serpentine belt and slip it off the compressor.
• Disconnect the AC line using a 13mm socket. This line holds both high and low sides.
• Disconnect the electrical connector from the compressor with a flat head screwdriver.
• Remove the back mounting bolt (13mm) and the front mounting bolt (15mm).
• Support the compressor while removing the last stud using an E8 inverted Torx socket.
• Remove the compressor by gently rocking it back and forth to avoid spilling oil.

Step 4: Prepare the New Compressor

• Measure the oil from the old compressor and record the amount.
• Remove the seals from the new compressor and check for proper fit.
• Clean the AC lines and make sure there are no debris or burrs that could cause leaks.
• Add the appropriate amount of fresh PAG oil to the new compressor (typically 3-5 ounces).

Step 5: Install the New Compressor

• Position the new compressor in place, ensuring no dirt enters the openings.
• Start with the back mounting bolt to secure the compressor.
• Attach the AC line using the 13mm socket and snug it up.
• Install the top stud and nut using a 15mm socket, tightening to 43 foot-pounds.
• Reconnect the electrical connector and ensure it clicks securely.

Step 6: Reassemble the Vehicle

• Reinstall the serpentine belt following the correct routing.
• Reattach the plastic shield covering the compressor.
• Reinstall the fender well cover, starting with the inner push pin to align everything.
• Secure the fender skirt with the screws and push pins.
• Replace the passenger front tire and torque the lug nuts to 130 foot-pounds in a star pattern.

Step 7: Recharge the AC System

• Hook up your AC recovery machine to vacuum the system.
• Add the necessary amount of PAG oil and recharge the system with refrigerant.
• Ensure all caps and covers are securely reattached.

Conclusion

Replacing the AC compressor in your Cadillac SRX can be a straightforward task with the right tools and steps. Remember to measure the oil correctly, avoid debris during installation, and recharge the system properly. After completing the replacement, your AC should function effectively, providing cool air for your drives. If you encounter any issues, consult a professional for assistance.