🔧 Cruze - Rear Turn Signal Bulb Replacement

Your Cruze’s rear turn signal bulbs sit inside the outer tail lamp housings. Replacement is straightforward: access the back of the tail lamp from inside the trunk, remove the bulb socket, and swap the bulb.

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

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⚠️ Safety & Precautions

• 🔸 Turn ignition OFF and remove the key before starting.
• 🔸 Let the tail lamps cool if they were recently on.
• 🔸 Don’t touch the new bulb glass with bare fingers; oils can shorten bulb life.
• 🔸 Support the tail lamp as you remove it to avoid scratching paint.

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🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 1/4" ratchet
• 6" extension (1/4")
• Plastic trim removal tool
• Small flathead screwdriver
• Flashlight
• Nitrile gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Rear turn signal bulb (amber, 7440A-type) - Replace in pairs - 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.
• Keep a towel handy to protect paint.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Access the tail lamp fasteners (inside trunk)

• Use a flashlight to locate the trunk side liner behind the tail lamp area.
• Use a plastic trim removal tool to pop out the liner clips (a trim tool is a non-metal pry tool that helps prevent scratches).
• If a clip is stubborn, carefully assist with a small flathead screwdriver.

Step 2: Remove the tail lamp assembly

• Use a 10mm socket, 1/4" ratchet, and 6" extension (1/4") to remove the tail lamp retaining nuts.
• Support the tail lamp with your other hand and gently pull the tail lamp straight rearward.
• If it feels stuck, wiggle gently—do not pry against painted surfaces with metal tools.
• Torque to 3 Nm (27 in-lbs) when reinstalling the 10mm nuts. Snug only—don’t crack the lamp.

Step 3: Remove the rear turn signal bulb socket

• On the back of the tail lamp, identify the turn signal socket (the socket that aligns with the amber section of the lens).
• Twist the socket counterclockwise by hand to unlock it, then pull it out.

Step 4: Replace the bulb

• Put on nitrile gloves to keep oils off the bulb.
• Pull the old bulb straight out of the socket by hand.
• Install the new rear turn signal bulb (amber, 7440A-type) by pushing it straight into the socket until fully seated.

Step 5: Reinstall socket and tail lamp

• Reinsert the socket into the tail lamp and twist clockwise by hand until it locks.
• Position the tail lamp on the body and align the guide pins.
• Install the retaining nuts using the 10mm socket, 1/4" ratchet, and 6" extension (1/4"), then Torque to 3 Nm (27 in-lbs).
• Reinstall the trunk liner and clips using the plastic trim removal tool.

Step 6: Repeat on the other side

• Use the same steps for the opposite rear tail lamp.
• Replacing both keeps brightness and color matched.

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✅ After Repair

• Turn ignition ON and test: left turn, right turn, and hazard flashers.
• Walk behind the Cruze to confirm blink rate is normal (fast blinking usually means a bulb isn’t working).
• Check that the tail lamp sits flush and no trunk liner is pinched.
• If you see moisture later, recheck the socket is fully locked and the lamp is seated evenly.

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💰 DIY vs Shop Cost

Shop Cost: $80-$160 (parts + labor)

DIY Cost: $10-$30 (parts only)

You Save: $70-$130 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.