🔧 Alternator - Replacement

The alternator charges the battery and powers the electrical system while the engine runs. On your Equinox, replacement requires removing the drive belt and working in a tight front-engine bay, so take your time and keep track of each fastener.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

---

⚠️ Safety & Precautions

• Disconnect the negative battery cable before starting. The charging system carries high current.
• Let the engine cool completely before touching the belt, pulleys, or alternator.
• Keep hands clear of the serpentine belt path. The belt tensioner is spring-loaded.
• Support the vehicle safely if you need access from underneath. Use jack stands, not just a jack.
• Do not short the alternator B+ terminal to ground.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 13mm socket
• 15mm socket
• Ratchet
• Breaker bar
• Serpentine belt tool (specialty)
• Torque wrench
• Flat trim tool
• Floor jack (rated 3-ton minimum)
• Jack stands
• Safety glasses
• Mechanic gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Alternator - Qty: 1
• Alternator drive belt - Qty: 1
• Alternator mounting bolt set - Qty: 1

---

📋 Before You Begin

• Park on level ground and set the parking brake.
• Move the shifter to Park and turn the ignition off.
• Disconnect the negative battery cable using a 10mm socket.
• If the belt shows cracks, glazing, or noise, replace it now while everything is apart.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the battery

• Use a 10mm socket to remove the negative battery cable.
• Move the cable aside so it cannot spring back and touch the terminal.

Step 2: Remove the engine cover and intake ducting

• Lift off the engine cover by hand.
• Use a flat trim tool and ratchet with 10mm socket to loosen and remove the intake duct or airbox pieces blocking access to the front of the engine.
• Set the clips and clamps aside in order.

Step 3: Access the alternator belt path

• From above or below, locate the serpentine belt tensioner.
• Use a serpentine belt tool (specialty) or breaker bar to rotate the tensioner and relieve belt tension.
• Slip the belt off the alternator pulley and slowly release the tensioner.
• Take a quick belt routing photo first.

Step 4: Remove the alternator electrical connections

• Use a 10mm socket to remove the protective cap and main power cable nut from the alternator B+ terminal.
• Unplug the alternator connector by pressing the lock tab and pulling it straight off.
• Move the wires clear of the work area.

Step 5: Remove the alternator mounting bolts

• Use a 13mm socket and 15mm socket to remove the alternator mounting bolts.
• Support the alternator with one hand as you remove the last bolt.
• Lift the alternator out of the engine bay.

Step 6: Install the new alternator

• Position the new alternator in place by hand.
• Install the mounting bolts finger-tight first, then snug them with a ratchet.
• Torque the alternator mounting bolts to 50 Nm (37 ft-lbs).

Step 7: Reconnect the electrical wiring

• Reconnect the alternator connector until it clicks.
• Install the B+ cable and nut with a 10mm socket.
• Torque the alternator B+ nut to 9 Nm (80 in-lbs).
• Reinstall the protective cap.

Step 8: Reinstall the serpentine belt

• Route the new or reused belt exactly as it was before.
• Use the serpentine belt tool (specialty) or breaker bar to rotate the tensioner again.
• Slip the belt onto the alternator pulley and slowly release the tensioner.
• Make sure the belt sits fully in every pulley groove.

Step 9: Reassemble the intake pieces and cover

• Reinstall any intake ducting or airbox parts removed earlier.
• Use a ratchet with 10mm socket to tighten clamps and fasteners.
• Reinstall the engine cover by hand.

Step 10: Reconnect the battery and test

• Reconnect the negative battery cable with a 10mm socket.
• Start the engine and watch the belt for smooth operation.
• Check for warning lights, squeaks, or charging problems.

---

✅ After Repair

• Verify battery voltage with the engine running if you have a meter. You should see charging voltage, not just battery voltage.
• Listen for belt noise for the first few minutes.
• Check that all electrical accessories work normally.
• If the battery was weak before the repair, charge it fully and retest.

---

💰 DIY vs Shop Cost

Shop Cost: $500-$900 (parts + labor)

DIY Cost: $180-$400 (parts only)

You Save: $320-$500 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 hours.

---

🎯 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.