🔧 Malibu - Taillight Bulb Replacement

On your Malibu, the rear bulbs are accessed from inside the trunk by removing the taillamp assembly. You’ll remove a few fasteners, twist the bulb sockets out, and swap the bulbs on both left and right sides.

Difficulty Level: Beginner | Estimated Time: 0.5-1.0 hours

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⚠️ Safety & Precautions

• ⚠️ Turn the ignition OFF and remove the key before starting.
• ⚠️ If you just used the lights, let bulbs cool 5 minutes (they get hot).
• ⚠️ Don’t touch the glass part of a bulb with bare fingers; oils can shorten bulb life.
• ⚠️ Support the taillamp as you pull it out to avoid scratching paint.
• Battery disconnect is not required for this job.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 1/4" drive ratchet
• 6" socket extension
• Trim panel tool
• Torque wrench (in-lb or Nm)
• Nitrile gloves
• Safety glasses
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear tail/stop light bulb (typically 3157) - Qty: 2
• Rear turn signal bulb (typically 3156) - Qty: 2

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Open the trunk and remove any cargo so you can work comfortably.
• Tip: Keep bolts/nuts in a small cup.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the taillamp fasteners

• Open the trunk.
• Use a trim panel tool to gently pull back the trunk liner/access flap behind the taillamp you’re working on.
• You’ll see the taillamp retaining fasteners (nuts/wing nuts depending on what’s installed).

Step 2: Remove the taillamp assembly

• Use a 10mm socket, 6" extension, and 1/4" ratchet to remove the taillamp retaining nuts.
• Support the lamp with your free hand as the last nut comes off.
• From outside the car, pull the taillamp straight rearward to release the alignment pins.
• Tip: Wiggle gently—don’t pry on painted edges.

Step 3: Remove the bulb socket(s)

• Turn the bulb socket counterclockwise by hand and pull it straight out of the taillamp.
• If you’re replacing “both taillight bulbs,” you’ll usually replace:
• the tail/stop bulb (brake + running light), and
• the turn signal bulb (blinker).
• Tip: If unsure, note which socket was where.

Step 4: Replace the bulb(s)

• Put on nitrile gloves.
• Pull the old bulb straight out of the socket (it’s a push-in style).
• Push the new bulb straight into the socket until fully seated.
• Inspect the socket for green/white crusty corrosion; if present, wipe gently with a clean dry cloth.

Step 5: Reinstall the socket(s) and taillamp

• Insert each socket back into the housing and twist clockwise to lock by hand.
• Line up the taillamp’s alignment pins and press the lamp straight into place.
• Reinstall the retaining nuts using a 10mm socket and 1/4" ratchet.
• Use a torque wrench: Torque to 3 Nm (27 in-lbs).
• Reposition the trunk liner/access flap.

Step 6: Repeat on the other side

• Repeat Steps 1–5 for the opposite taillamp so both sides match in brightness and color.

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✅ After Repair

• Turn the ignition to ON.
• Test running lights, brake lights, hazards, and turn signals.
• If a new bulb doesn’t light, remove that socket and rotate the bulb 180° (some aftermarket bulbs fit tighter one way).

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💰 DIY vs Shop Cost

Shop Cost: $80-$180 (parts + labor)

DIY Cost: $10-$40 (parts only)

You Save: $70-$140 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.