🔧 Armada - Fuel Cap Replacement

Replacing the fuel cap on your Armada is a quick job: you’ll remove the old cap and install a new one that seals correctly. A good seal prevents fuel vapor leaks and helps avoid an evaporative-emissions (EVAP) warning light.

Difficulty Level: Beginner | Estimated Time: 0.1-0.2 hours

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⚠️ Safety & Precautions

• ⛽ Work outside or in a well-ventilated area (fuel vapors).
• 🚭 No smoking, sparks, or open flames near the fuel door.
• 🧤 Wear gloves; fuel can irritate skin.
• 🛑 Engine off and key away from the vehicle while you work.
• 🔋 Battery disconnect is not required.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Clean shop towel
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel filler cap - Qty: 1

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📋 Before You Begin

• 🅿️ Park on level ground and shift to Park.
• 🛑 Turn the engine off and remove the key/fob from the cabin.
• 🧼 Use a clean shop towel to wipe dust around the fuel cap area (helps keep dirt out).

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the fuel door

• Use your hand to open the fuel door on the side of the vehicle.
• Use a flashlight to see the cap and sealing area clearly.

Step 2: Remove the old fuel cap

• Put on nitrile gloves.
• Use your hand to turn the cap counterclockwise until it releases.
• If your cap has a tether (a small strap that keeps the cap attached), let the cap hang without twisting the strap.

Step 3: Inspect and clean the sealing surfaces

• Use a clean shop towel to wipe the filler neck lip (the round sealing edge) and the area around it.
• Use a flashlight to check for cracks, heavy rust, or dirt buildup where the cap seals.

Step 4: Install the new fuel cap

• Use your hand to place the new cap on the filler neck and turn it clockwise.
• Keep turning until you feel/hear it click and stop tightening normally. Clicks mean the seal is set.

Step 5: Close the fuel door

• Use your hand to close the fuel door until it fully latches.
• Use a flashlight to confirm the cap is seated evenly (not cross-threaded).

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✅ After Repair

• 🚗 Start the engine and confirm no fuel smell around the fuel door area.
• 🟠 If you had a Check Engine light related to a loose cap, it may take a few drive cycles to clear on its own; otherwise it can be cleared with a scan tool.
• 🔁 Re-check the cap after your next fill-up to make sure it still clicks tight.

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💰 DIY vs Shop Cost

Shop Cost: $30-$90 (parts + labor)

DIY Cost: $15-$45 (parts only)

You Save: $15-$45 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 0.1-0.2 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.