🔧 Traverse - Battery Replacement

This is a manageable first DIY job. The battery sits beneath the floor behind the front passenger seat, not under the hood. Plan on lifting a heavy AGM battery straight out of a tight compartment.

Difficulty Level: Beginner | Estimated Time: 30-60 minutes

Assumption: These instructions cover the original-style underfloor battery installation.

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition completely off and keep the key fob away from the Traverse.
• ⚠️ Remove the negative terminal first and reconnect it last.
• ⚠️ Never let a metal tool bridge the positive terminal to the body.
• ⚠️ Wear safety glasses and gloves. Batteries contain corrosive acid and can produce explosive gas.
• ⚠️ Keep the battery upright. An AGM battery is sealed, but it can still leak if damaged.
• ⚠️ Do not use the underhood jump-start posts for physical battery replacement.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 13mm socket
• 3-inch socket extension
• 3/8-inch-drive ratchet
• 3/8-inch-drive torque wrench
• Plastic trim removal tool
• Battery terminal cleaning brush
• Battery lifting strap rated for 60 pounds
• Mechanic gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• AGM vehicle battery matched to the Traverse - Qty: 1
• Battery terminal protector washers - Qty: 1 set
• Battery terminal cleaner spray - Qty: 1

Use an AGM battery, meaning an absorbent glass mat battery designed for high electrical demand. Match the original battery’s physical size, terminal layout, vent provision, and minimum cold-cranking rating. Chevrolet advises using the correct size, reserve capacity, and cold-cranking output for the vehicle. chevrolet.com

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📋 Before You Begin

• 📋 Park on level ground, select Park, apply the parking brake, and open a window.
• 📋 Switch off the lights, climate control, radio, and all accessories.
• 📋 Shut the ignition off, open the rear passenger door, and wait at least three minutes before disconnecting anything.
• 📋 Move the front passenger seat forward to create working room.
• 📋 Remove loose metal jewelry before touching the battery.
• 📋 Take a phone photo of the battery, cables, vent connection, and hold-down before disassembly.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the battery compartment

• Use the plastic trim removal tool to lift the rear floor covering behind the front passenger seat.
• Remove the battery access cover and place its fasteners somewhere safe.
• Identify the negative terminal marked “−” and the positive terminal marked “+”.
• Your phone photo beats your memory every time.

Step 2: Disconnect the negative terminal

• Use the 10mm socket, extension, and ratchet to loosen the negative terminal clamp.
• Twist the clamp gently and lift it straight off the battery post.
• Move the cable aside so it cannot spring back onto the post.
• Do not pry against the battery case.

Step 3: Disconnect the positive terminal

• Open or remove the red positive-terminal cover.
• Use the 10mm socket, extension, and ratchet to loosen the positive terminal clamp.
• Lift the clamp from the post and secure it away from the battery.
• Keep the ratchet from touching surrounding body metal while it contacts the positive terminal.

Step 4: Remove the vent connection and hold-down

• Pull the battery vent connection straight from the battery case if one is fitted.
• Use the 13mm socket, extension, and ratchet to remove the lower battery hold-down bolt and clamp.
• Check that no wiring, vent tubing, or brackets remain attached.

Step 5: Lift out the old battery

• Attach the battery lifting strap rated for 60 pounds securely to the battery.
• Keep your back straight and lift using your legs.
• Keep the battery upright while removing it from the floor compartment.
• Set it on a stable surface away from children, sparks, and flames.

Step 6: Clean and inspect the compartment

• Put on mechanic gloves and safety glasses.
• Use the battery terminal cleaner spray and battery terminal cleaning brush to remove corrosion from the cable clamps.
• Inspect the tray, hold-down, vent tube, and cables for damage.
• Allow cleaned parts to dry before installing the battery.

Step 7: Install the new battery

• Use the battery lifting strap rated for 60 pounds to lower the new battery into the compartment.
• Position it exactly like the old battery, with the positive and negative posts on the correct sides.
• Make sure the battery sits flat and no cable or vent tube is trapped underneath.
• Reconnect the vent fitting to the correct vent opening. Transfer any required vent plug to the unused opening.

Step 8: Secure the battery

• Reinstall the lower hold-down clamp and bolt using the 13mm socket, extension, and torque wrench.
• Tighten it securely enough that the battery cannot slide or tip.
• Do not overtighten it against the plastic battery case.
• Use the torque value supplied with the replacement hold-down hardware. Do not guess if no specification is provided.

Step 9: Reconnect the positive terminal

• Install the positive clamp fully down over the positive post.
• Use the 10mm socket and torque wrench to tighten the clamp until secure.
• Do not crush or distort the clamp. Use the replacement battery or terminal manufacturer’s specified torque.
• Close the red positive-terminal cover.

Step 10: Reconnect the negative terminal

• Place a terminal protector washer over the negative post if compatible with the original clamp arrangement.
• Install the negative clamp fully down over the post.
• Use the 10mm socket and torque wrench to tighten the clamp to the terminal manufacturer’s specified torque.
• Try rotating both clamps by hand. Neither clamp should move.

Step 11: Reinstall the access cover

• Confirm the cables and vent tube are routed without pinching or sharp bends.
• Reinstall the battery cover and floor covering using the plastic trim removal tool.
• Return the front passenger seat to its normal position.

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✅ After Repair

• ✅ Start the Traverse and confirm that it cranks strongly.
• ✅ Check the instrument panel for charging-system or warning messages.
• ✅ Set the clock and restore any preferences that were lost.
• ✅ Turn the steering wheel fully left and right, then drive briefly if stability-system messages appear after power restoration.
• ✅ Test the windows. If automatic operation was lost, fully lower and then fully raise each affected window while holding its switch briefly.
• ✅ Have the charging system tested if the new battery goes flat or the battery warning light remains illuminated.
• ✅ Return the old battery for recycling and any available core-charge refund.

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💰 DIY vs Shop Cost

Shop Cost: $280-$500 equivalent, including battery and labor

DIY Cost: $200-$425 equivalent, plus any locally required taxes or core charge

You Save: Approximately $50-$150 by doing it yourself!

Local labor and imported battery prices can vary considerably. This repair normally takes a shop approximately 0.5-1.0 hour.

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🎯 Ready to get started?

HowToo has opened the battery aisle for your Traverse, including matching AGM batteries, terminal cleaner, protector washers, and hold-down hardware. Check the parts and tools sections below to add everything you need to your cart.