🔧 Equinox - Starter Motor Replacement

You’ll be removing the old starter motor from the lower rear side of the engine and installing a new one. This restores proper cranking when you turn the key or push start.

Difficulty Level: Intermediate | Estimated Time: 2–3 hours

---

⚠️ Safety & Precautions

• 🛑 Always disconnect the negative battery cable before working; the starter cable is “live” and can spark or shock you.
• 🛑 Support the front of your Equinox on jack stands, never rely on a floor jack alone.
• 🛑 Let the engine and exhaust cool completely; the starter sits close to hot components.
• 🛑 Wear safety glasses and mechanic gloves to protect from dirt, rust, and sharp edges.
• 🛑 Keep the key out of the ignition and do not allow anyone to try to start the engine while you’re under the vehicle.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 🧰 Floor jack (rated 3-ton minimum)
• 🧰 Jack stands (rated 3-ton minimum, Qty: 2)
• 🧰 Wheel chocks
• 🧰 3/8" drive ratchet
• 🧰 1/2" drive ratchet
• 🧰 Metric socket set (8mm–19mm)
• 🧰 10mm socket
• 🧰 13mm socket
• 🧰 15mm socket
• 🧰 3/8" drive extensions (3", 6")
• 🧰 1/2" drive torque wrench (10–100 Nm range)
• 🧰 3/8" drive torque wrench (5–60 Nm range)
• 🧰 Flathead screwdriver (medium)
• 🧰 Trim clip removal tool
• 🧰 Work light or LED trouble light
• 🧰 Mechanic gloves
• 🧰 Safety glasses
• 🧰 Battery terminal brush
• 🧰 Small wire brush

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• 🔩 Starter motor assembly (2.4L) - Qty: 1
• 🔩 Starter mounting bolts - Qty: 2 (recommended new)
• 🔩 Battery terminal cleaning kit - Qty: 1
• 🔩 Dielectric grease - Qty: 1 small tube
• 🔩 Anti-seize compound - Qty: 1 small tube (optional)
• 🔩 Plastic push clips for lower splash shield - Qty: 4–6 (optional, in case old ones break)

---

📋 Before You Begin

• 🧭 Park the Equinox on level ground, shift to PARK, and set the parking brake.
• 🧭 Place wheel chocks behind the rear wheels.
• 🔋 Turn ignition OFF, remove the key, and open the hood.
• 🔋 You will disconnect the negative battery cable before going under the vehicle.
• 💡 A torque wrench is a ratchet that lets you tighten bolts to an exact specification.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the battery

• Open the hood and locate the battery on the driver-side front of the engine compartment.
• Use a 10mm socket and 3/8" drive ratchet to loosen the nut on the negative (black) battery terminal.
• Twist and lift the negative cable off the battery post and tuck it aside so it cannot spring back.
• Cover the terminal with a rag to prevent contact.

Step 2: Raise and support the front of the Equinox

• Place a floor jack under the front subframe or approved jacking point (center front crossmember).
• Jack the vehicle up high enough to work comfortably underneath.
• Place jack stands under the left and right subframe rails and gently lower the vehicle onto them.
• Give the vehicle a firm shake to ensure it is stable on the stands.
• Never work under a car supported only by a jack.

Step 3: Remove the lower engine splash shield

• Crawl under the front and locate the plastic lower engine splash shield.
• Use a flathead screwdriver or trim clip removal tool to remove the plastic push clips along the front and sides.
• If there are screws, use the appropriate 10mm socket with your 3/8" ratchet.
• Lower the splash shield and set it aside.

Step 4: Locate the starter motor

• From underneath, look at the rear side of the engine where it meets the transmission (toward the driver’s side).
• The starter is a cylindrical motor about the size of a large soda can, bolted to the transmission bellhousing with two bolts.
• You’ll see a thick cable (battery cable) and a smaller wire connected to the back of the starter.
• Use a work light so you can see clearly.

Step 5: Disconnect electrical connectors on the starter

• First locate the small plug-on connector (the “S” terminal, or solenoid signal wire).
• Press the tab and pull it straight off by hand; if needed gently pry the tab with a flathead screwdriver.
• Next, locate the large cable attached with a nut (the main battery cable).
• Use a 13mm socket and 3/8" ratchet to remove the nut from the large terminal on the starter.
• Pull the cable and eyelet off the stud and move it aside.
• Torque spec (on reassembly): main battery cable nut 15 Nm (11 ft-lbs).

Step 6: Remove starter mounting bolts

• Find the two starter mounting bolts that go through the starter into the transmission bellhousing.
• Use a 15mm socket, 3/8" or 1/2" ratchet, and a 3" or 6" extension as needed to reach them.
• Break both bolts loose, then remove the lower bolt first while supporting the starter with your free hand.
• Remove the upper bolt next, carefully holding the starter so it doesn’t drop.
• Torque spec (on reassembly): starter mounting bolts 50 Nm (37 ft-lbs).
• Starter is heavier than it looks; keep a good grip.

Step 7: Remove the old starter

• Once both bolts are out, wiggle the starter straight back away from the transmission.
• Clear it past any brackets or wiring and lower it out from underneath.
• Compare the old starter to the new one: check mounting holes, electrical studs, and nose shape.
• They should match closely in size and shape.

Step 8: Prepare the mounting surface and wiring

• Use a small wire brush to clean the area on the transmission where the starter mounts; remove rust and debris.
• Lightly clean the eyelet on the main battery cable with a wire brush if corroded.
• Apply a very thin coat of anti-seize compound to the threads of the new mounting bolts if desired (avoid the bolt tips).
• Do not get any grease or anti-seize on the starter gear.

Step 9: Install the new starter motor

• Position the new starter in place, aligning the nose into the opening in the transmission bellhousing.
• Hand-thread the upper 15mm bolt first a few turns to hold the starter.
• Then hand-thread the lower 15mm bolt.
• Once both are started by hand, use a 15mm socket and ratchet to snug them.
• Use your 1/2" drive torque wrench with the 15mm socket to tighten both bolts to 50 Nm (37 ft-lbs).
• Always start bolts by hand to avoid cross-threading.

Step 10: Reconnect starter wiring

• Slide the main battery cable eyelet back onto the large stud on the starter.
• Install the nut by hand, then tighten it with a 13mm socket and 3/8" torque wrench to 15 Nm (11 ft-lbs).
• Push the small solenoid connector straight onto its terminal until it clicks into place.
• Apply a very small amount of dielectric grease to the exposed part of the connector if desired to protect against moisture.
• Do not overtighten the small terminal nut if present.

Step 11: Reinstall the lower engine splash shield

• Lift the splash shield back into place under the front of the vehicle.
• Reinstall any screws using a 10mm socket and 3/8" ratchet.
• Reinstall the plastic push clips using your fingers or a trim clip removal tool to press them in firmly.

Step 12: Lower the vehicle

• Use the floor jack to raise the front of the Equinox slightly off the jack stands.
• Remove the jack stands and then slowly lower the vehicle back to the ground.
• Remove the wheel chocks from the rear wheels.

Step 13: Reconnect the battery and clean terminals

• At the battery, use a battery terminal brush to clean the negative post if it looks dirty or corroded.
• Place the negative cable back onto the negative (black) battery post.
• Use a 10mm socket and 3/8" ratchet to snug the terminal nut. Make it tight enough that the cable cannot rotate by hand, but do not overtighten.
• You can apply a thin coat of dielectric grease on the outside of the terminal to help prevent corrosion.

---

✅ After Repair

• 🔑 Sit in the driver’s seat and turn the key to START; the engine should crank strongly and start quickly.
• 👂 Listen for any unusual grinding or whining noises while starting; if you hear them, shut off immediately and recheck mounting and alignment.
• 🚫 Verify there are no warning lights related to the charging/starting system on the dash.
• 🔍 After the first couple of starts, recheck under the vehicle (once cool) for any loose wiring or components.

---

💰 DIY vs Shop Cost

Shop Cost: $450–$750 (parts + labor)

DIY Cost: $150–$300 (parts only)

You Save: $300–$450 by doing it yourself!

Shop labor rates typically run $100–$150/hour. This repair takes a shop about 1.5–2.0 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 above to add everything to your cart.