🔧 Traverse - Headlight Bulb Replacement

Replacing both headlight bulbs on your Traverse restores safe nighttime visibility and keeps the light color even from side to side. On this model, the low-beam/high-beam headlamp bulbs are serviced from behind the headlamp housings, inside the engine bay.

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

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⚠️ Safety & Precautions

• ⚠️ Turn the headlights off and let the bulbs cool before touching the headlamp area.
• ⚠️ Do not touch the glass part of a halogen bulb with bare fingers; skin oil can shorten bulb life.
• ⚠️ Disconnecting the battery is not normally required, but keep the headlight switch OFF while working.
• ⚠️ Work on level ground with the transmission in Park and the parking brake set.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Flashlight
• Trim clip removal tool
• Flat-blade screwdriver 1/4 inch
• 10mm socket
• 1/4 inch drive ratchet
• 1/4 inch drive 6 inch extension

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Headlight bulbs - Qty: 2

Note: Replace both bulbs together so the brightness and color match.

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📋 Before You Begin

• 🚗 Park your Traverse on a flat surface, shift to Park, and set the parking brake.
• 💡 Turn the headlight switch fully OFF.
• 🧤 Put on nitrile gloves before handling the new bulbs.
• 🔍 Open the hood and use a flashlight to look behind each headlamp housing.
• 📌 A trim clip removal tool is a small pry tool used to lift plastic push clips without breaking them.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the Hood and Locate the Headlamp Backs

• Use the hood release inside the cabin, then lift the hood and secure it.
• Use a flashlight to look behind the driver-side headlamp housing first.
• Find the round bulb access cover or rear bulb connector at the back of the headlamp.
• Work one side at a time.

Step 2: Create Working Room if Needed

• If the air duct or plastic cover blocks access, use a trim clip removal tool to lift the plastic retaining clips.
• If a 10mm fastener is present, use a 10mm socket, 1/4 inch drive ratchet, and 6 inch extension to remove it.
• Move only the cover or ducting needed to reach the bulb. Do not pull hard on wiring.
• Set clips and bolts in a cup so they do not get lost.

Step 3: Remove the Rear Bulb Cover

• Use your gloved hand to turn the rear headlamp access cover counterclockwise.
• If the cover is tight, use a flat-blade screwdriver 1/4 inch gently at the edge to help start it.
• Remove the cover and place it somewhere clean.
• Check the rubber seal on the cover. It must go back on fully to keep moisture out.

Step 4: Disconnect the Old Bulb

• Use your fingers to press the locking tab on the electrical connector.
• Pull the connector straight back off the bulb.
• If it feels stuck, use a flat-blade screwdriver 1/4 inch to gently help release the tab.
• Do not pull on the wires themselves.

Step 5: Remove the Old Headlight Bulb

• Use your gloved hand to rotate the bulb counterclockwise until it unlocks.
• Pull the bulb straight out of the headlamp housing.
• Look at the tabs on the old bulb so you understand how the new bulb locks in.
• Do not force the bulb.

Step 6: Install the New Headlight Bulb

• Put on clean nitrile gloves before opening the new bulb package.
• Hold the new bulb by the plastic base only.
• Insert the new bulb into the headlamp housing with the tabs lined up.
• Use your gloved hand to rotate the bulb clockwise until it locks firmly in place.
• No torque spec applies because this bulb locks by hand pressure only.

Step 7: Reconnect the Electrical Connector

• Push the electrical connector onto the new bulb until the locking tab clicks.
• Use a flashlight to confirm the connector is fully seated and straight.
• Gently tug the connector body, not the wires, to confirm it is locked.

Step 8: Reinstall the Rear Bulb Cover

• Place the rear access cover back onto the headlamp housing.
• Use your hand to rotate it clockwise until it is fully seated.
• Make sure the cover seal is even all the way around to prevent condensation inside the headlamp.

Step 9: Repeat on the Other Side

• Use the same steps on the passenger-side headlamp.
• If access is tighter, use the flashlight and 6 inch extension carefully around the surrounding components.
• Replace the second bulb the same way so both sides match.

Step 10: Reinstall Any Removed Covers or Ducting

• Reposition any air duct or plastic cover removed earlier.
• Use the trim clip removal tool handle or your fingers to press plastic clips back into place.
• If 10mm bolts were removed, use the 10mm socket, ratchet, and extension to reinstall them snugly.
• Torque small 10mm cover fasteners to 9 Nm (80 in-lbs) if applicable.

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✅ After Repair

• ✅ Turn the headlights ON and confirm both new bulbs work.
• ✅ Check low beams and high beams if the replaced bulb serves both functions.
• ✅ Walk around the front of your Traverse and confirm both lights look even.
• ✅ If one bulb does not turn on, switch the headlights OFF and recheck the connector lock.
• ✅ After the first rainy drive or car wash, check for moisture inside the headlamp lens.

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💰 DIY vs Shop Cost

Shop Cost: $120-$250 (parts + labor)

DIY Cost: $30-$90 (parts only)

You Save: $90-$160 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.5-1.0 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.