🔧 A/C Compressor - Replacement

The A/C compressor on your Equinox circulates refrigerant through the system. If it has seized, is noisy, or is leaking oil/refrigerant, the compressor must be replaced and the system must be evacuated and recharged properly.

Difficulty Level: Advanced | Estimated Time: 4-6 hours

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⚠️ Safety & Precautions

• Have the refrigerant recovered by an A/C shop before opening the system. Refrigerant is under high pressure and can cause frostbite.
• Do not vent refrigerant to the air.
• Disconnect the negative battery cable before starting work.
• Keep dirt out of the A/C lines. Open lines can ruin the new compressor.
• If the compressor failed internally, flush contaminated lines and replace the receiver/drier or desiccant service part if equipped with the replacement setup.
• Wear safety glasses and gloves the entire time.

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🔧 Required Tools

You'll need the following tools for this repair:

• Metric socket set
• Metric wrench set
• Ratchet
• Extensions
• Torque wrench
• Serpentine belt tool (specialty)
• Line wrench set
• A/C manifold gauge set (specialty)
• Vacuum pump (specialty)
• Refrigerant recovery machine (specialty)
• Drain pan
• Trim tool set
• Floor jack (rated 3-ton minimum)
• Jack stands
• Safety glasses
• Nitrile gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• A/C compressor - Qty: 1
• A/C compressor clutch/pulley assembly - Qty: 1, if not included with compressor
• A/C compressor seal kit - Qty: 1
• O-ring set for A/C lines - Qty: 1
• Engine serpentine belt - Qty: 1
• Refrigerant oil compatible with R-1234yf system - Qty: 1 bottle
• R-1234yf refrigerant - Qty: as required for full recharge
• Receiver/drier or desiccant service component - Qty: 1, if required by contamination or line opening

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Recover the refrigerant before loosening any A/C line.
• Disconnect the negative battery cable.
• Raise the front of the vehicle and support it with jack stands if needed for access.
• Keep caps or clean tape ready to cover open refrigerant lines immediately.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Recover refrigerant and disconnect battery

• Have the refrigerant recovered using an A/C recovery machine.
• Disconnect the negative battery cable with a 10mm wrench.
• Never crack a line before recovery.

Step 2: Remove the engine cover and intake parts blocking access

• Remove the engine cover by hand.
• Use a metric socket set and trim tool set to remove any intake ducting or air box pieces blocking compressor access.
• Set all clips and fasteners aside in order.

Step 3: Remove the serpentine belt

• Use a serpentine belt tool (specialty) to rotate the belt tensioner.
• Slip the belt off the compressor pulley and remove it from the engine.
• Inspect the belt now. Replace it if cracked or glazed.

Step 4: Disconnect the A/C lines from the compressor

• Use a line wrench set to loosen the refrigerant line bolts.
• Remove the lines carefully and cap both openings immediately.
• Replace the old O-rings with new ones lubricated with the correct refrigerant oil.
• Torque to 15 Nm (11 ft-lbs) on reassembly.

Step 5: Remove the compressor

• Use a metric socket set and ratchet with extensions to remove the compressor mounting bolts.
• Support the compressor with one hand as the last bolt comes out.
• Lower the compressor out of the engine bay.
• Torque to 25 Nm (18 ft-lbs) for compressor mounting bolts on installation.

Step 6: Prepare the new compressor

• Compare the new compressor to the old one before installation.
• Drain and measure any oil from the old unit if required.
• Add the correct amount of compatible refrigerant oil to the new compressor.
• Rotate the compressor hub by hand a few turns to distribute oil.
• Keep the new unit capped until install.

Step 7: Install the new compressor

• Lift the new compressor into place.
• Start all mounting bolts by hand before tightening.
• Use a torque wrench to tighten the compressor bolts to 25 Nm (18 ft-lbs).

Step 8: Reconnect the A/C lines

• Install new lubricated O-rings on the line fittings.
• Connect the lines and start the bolts by hand to avoid cross-threading.
• Use a line wrench set to tighten the line bolts to 15 Nm (11 ft-lbs).

Step 9: Reinstall the belt and intake parts

• Route the serpentine belt using the factory belt path.
• Use the serpentine belt tool (specialty) to move the tensioner and slip the belt into place.
• Reinstall the intake ducting and engine cover using the metric socket set and by hand.

Step 10: Evacuate, leak test, and recharge

• Use an A/C manifold gauge set (specialty) and vacuum pump (specialty) to evacuate the system.
• Pull vacuum and hold it to confirm there are no leaks.
• Recharge the system with the correct amount of R-1234yf refrigerant using approved equipment.
• Use the exact charge amount from the under-hood label.

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✅ After Repair

• Start the engine and turn the A/C on MAX.
• Check that the compressor engages and the center vents begin cooling.
• Inspect all line connections for leaks with a UV dye check or electronic leak detector.
• Listen for abnormal noise from the compressor or belt.
• If cooling is weak, the system may be undercharged or there may still be air in the system.

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💰 DIY vs Shop Cost

Shop Cost: $1,100-$1,800 (parts + labor)

DIY Cost: $350-$850 (parts only)

You Save: $750-$950 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 4-6 hours.

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🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.