🔧 Fuel Cap - Replacement

The fuel cap on your Silverado seals the tank, helps control evaporative emissions, and keeps dirt and moisture out of the fuel system. If the cap is cracked, the seal is damaged, or the check engine light came on with an EVAP leak code, replacing it is a quick fix.

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

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⚠️ Safety & Precautions

• Work outdoors or in a well-ventilated area.
• Keep away from sparks, cigarettes, and open flame.
• Do not overfill the fuel tank after installation.
• No battery disconnect is required.

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🔧 Required Tools

You'll need the following tools for this repair:

• Gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel cap - Qty: 1

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📋 Before You Begin

• Park on level ground and set the parking brake.
• Make sure the fuel door is unlocked before starting.
• Let the vehicle sit for a few minutes if it was just refueled.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Open the fuel door

• Open the fuel door and inspect the old cap and tether.
• Use your hand to check for cracks, a damaged seal, or a loose tether.

Step 2: Remove the old cap

• Turn the fuel cap counterclockwise by hand until it releases.
• If the cap is stuck, gently wiggle it while turning. Do not use pliers.
• Let the cap hang on the tether or remove the tether if the replacement includes one.

Step 3: Install the new cap

• Align the new fuel cap with the filler neck.
• Turn it clockwise by hand until you feel it click or stop firmly.
• Hand-tight is enough.

Step 4: Verify the seal

• Try turning the cap slightly clockwise again to confirm it is locked in place.
• Close the fuel door and make sure it latches normally.

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✅ After Repair

• Start the engine and make sure there is no fuel odor near the tank area.
• If a check engine light was on, it may take a few drive cycles to clear after the repair.
• If the light stays on, scan for EVAP-related codes.

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💰 DIY vs Shop Cost

Shop Cost: $60-$120 (parts + labor)

DIY Cost: $15-$35 (parts only)

You Save: $45-$85 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.