🔧 Traverse - Starter Motor Replacement

Replacing the starter motor on your Traverse means removing the old electric motor that cranks the engine and installing a new one. On the 3.6L V6, the starter is mounted low on the engine/transmission area, so the vehicle must be safely raised for access.

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

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⚠️ Safety & Precautions

• ⚠️ Disconnect the negative battery cable before touching the starter. The starter cable carries high current and can spark dangerously.
• ⚠️ Support your Traverse with jack stands before going underneath. Never rely on a floor jack alone.
• ⚠️ Let the exhaust and engine cool fully before starting. The starter area can be close to hot components.
• ⚠️ Keep the key fob away from the vehicle while working to prevent accidental wake-up or crank requests.
• ⚠️ If using a memory saver, do not use one for this job because the starter power cable must be fully de-energized.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 13mm socket
• 15mm socket
• 3/8-inch drive ratchet
• 3/8-inch drive 6-inch extension
• 3/8-inch drive universal joint
• Torque wrench 10-80 ft-lbs
• Flathead screwdriver
• Trim clip remover
• Needle-nose pliers
• Floor jack rated 3-ton minimum
• Jack stands rated 3-ton minimum
• Wheel chocks
• Work light
• Mechanic gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Starter motor - Qty: 1
• Starter mounting bolts - Qty: 2, replace if damaged or corroded
• Battery terminal corrosion protectant - Qty: 1

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📋 Before You Begin

• Park your Traverse on a flat, solid surface.
• Shift to Park and apply the parking brake.
• Place wheel chocks behind the rear wheels.
• Open the hood and locate the battery area before lifting the vehicle.
• A torque wrench tightens bolts to an exact tightness so they are not loose or over-tightened.
• A universal joint is a small flexible socket adapter that helps reach bolts at an angle.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Disconnect the Battery

• Use a 10mm socket and 3/8-inch drive ratchet to loosen the negative battery cable clamp.
• Remove the negative cable from the battery post and move it aside so it cannot spring back.
• Wait at least 2 minutes before working near the starter wiring.
• Black cable comes off first.

Step 2: Raise and Support the Vehicle

• Use the floor jack rated 3-ton minimum to lift the front of your Traverse at the front subframe jacking area.
• Place jack stands rated 3-ton minimum under the approved front support points.
• Lower the vehicle gently onto the stands and lightly shake the vehicle to confirm it is stable.
• Keep the wheel chocks in place behind the rear wheels.

Step 3: Remove the Lower Splash Shield

• Put on safety glasses and mechanic gloves.
• Use a trim clip remover to remove plastic retainers from the lower engine splash shield.
• Use a 10mm socket, 3/8-inch drive ratchet, and 3/8-inch drive 6-inch extension to remove any shield bolts.
• Lower the shield and set it aside.

Step 4: Locate the Starter

• Use a work light to look low on the engine where it meets the transmission bellhousing.
• The starter is a small cylindrical motor with a thick battery cable and a smaller control wire attached.
• Note the routing of the wires before removal. Taking a photo with your phone helps a lot.
• Photo first, remove second.

Step 5: Disconnect the Starter Wiring

• Use a flathead screwdriver or needle-nose pliers to carefully release the small starter control wire connector, if equipped with a locking tab.
• Use a 13mm socket, 3/8-inch drive ratchet, and 3/8-inch drive extension to remove the nut from the large starter battery cable terminal.
• Move the large cable away from the starter and make sure it does not touch metal.
• Keep the cable nut safe if the new starter does not include one.

Step 6: Remove the Starter Mounting Bolts

• Support the starter with one hand because it can drop when the bolts come out.
• Use a 15mm socket, 3/8-inch drive ratchet, 3/8-inch drive 6-inch extension, and 3/8-inch drive universal joint to remove the starter mounting bolts.
• Remove the lower bolt first, then the upper bolt.
• Lower the starter out of the engine bay carefully.

Step 7: Compare the Old and New Starter

• Place the old and new starter motor side by side.
• Confirm the mounting ears, electrical terminals, and gear nose shape match.
• If any bracket or heat shield transfers from the old starter, use the correct socket from your set and move it to the new starter in the same position.

Step 8: Install the New Starter

• Lift the new starter motor into position by hand.
• Start both mounting bolts by hand first to avoid cross-threading.
• Use a 15mm socket, 3/8-inch drive ratchet, and 3/8-inch drive extension to snug the bolts evenly.
• Use a torque wrench 10-80 ft-lbs and 15mm socket to tighten the starter mounting bolts to Torque to 50 Nm (37 ft-lbs).

Step 9: Reconnect the Starter Wiring

• Install the large battery cable onto the starter B+ terminal.
• Use a 13mm socket and torque wrench 10-80 ft-lbs to tighten the starter battery cable nut to Torque to 12 Nm (106 in-lbs).
• Reconnect the small starter control wire connector by hand until it clicks.
• Gently tug the connector to make sure it is locked.

Step 10: Reinstall the Lower Splash Shield

• Raise the splash shield back into place by hand.
• Use a trim clip remover to reinstall plastic clips if needed.
• Use a 10mm socket, 3/8-inch drive ratchet, and 3/8-inch drive extension to reinstall any shield bolts.
• Tighten small splash shield bolts snug only; do not overtighten plastic panels.

Step 11: Lower the Vehicle

• Use the floor jack rated 3-ton minimum to lift the front slightly off the jack stands.
• Remove the jack stands rated 3-ton minimum.
• Lower your Traverse slowly to the ground.
• Remove the wheel chocks only after the vehicle is fully on the ground.

Step 12: Reconnect the Battery

• Place the negative battery cable back onto the negative battery post.
• Use a 10mm socket and 3/8-inch drive ratchet to tighten the clamp nut snugly.
• Apply battery terminal corrosion protectant to the terminal after tightening.
• Do not overtighten the battery clamp because it can crack.

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✅ After Repair

• Start your Traverse and listen for a normal, quick crank.
• If you hear clicking only, recheck battery charge and starter cable tightness.
• If the starter grinds, shut it off immediately and recheck starter mounting.
• Confirm there are no warning lights caused by low battery voltage.
• Reset the clock and any saved settings if they were lost during battery disconnect.
• After the first drive, look underneath and confirm the splash shield is secure.

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💰 DIY vs Shop Cost

Shop Cost: $450-$850 (parts + labor)

DIY Cost: $180-$420 (parts only)

You Save: $270-$430 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.5-2.5 hours.

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🎯 Ready to get started?

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