🔧 Radiator Hose - Replacement

Replacing a radiator hose on your Silverado means draining enough coolant to safely remove the old hose, then installing the new hose with fresh clamps if needed and refilling the cooling system. A leaking or swollen hose can cause overheating fast, so fix this as soon as possible.

Difficulty Level: Beginner | Estimated Time: 1-2 hours

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⚠️ Safety & Precautions

• Work only on a completely cold engine. Hot coolant can spray out and cause serious burns.
• Keep hands clear of the fan. The cooling fan can start even with the engine off on some vehicles.
• Use gloves and safety glasses. Coolant is slippery and harmful if it gets in your eyes or on your skin.
• Catch all drained coolant in a clean pan. Do not let it contact pets or wildlife.
• Battery disconnect is not usually required for this repair.

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🔧 Required Tools

You'll need the following tools for this repair:

• Flat-blade screwdriver
• Pliers
• Drain pan
• Funnel
• Coolant hose pick tool (specialty)
• Floor jack (rated 3-ton minimum)
• Jack stands
• Safety glasses
• Nitrile gloves
• Shop towels

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Radiator hose - Qty: 1
• New hose clamps - Qty: 2
• Dex-Cool coolant - Qty: As needed for refill
• Distilled water - Qty: As needed for mixing if required

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📋 Before You Begin

• Park on level ground and let the engine cool completely.
• Set the parking brake and put the transmission in Park.
• If you need more room, raise the front of the truck with a floor jack and support it securely on jack stands.
• Open the coolant reservoir cap only when the engine is cold.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve coolant pressure and drain coolant

• With the engine cold, slowly remove the coolant reservoir cap.
• Place a drain pan under the radiator.
• Use pliers to open the radiator drain if equipped, or drain coolant from the lower hose connection if needed.
• Drain enough coolant so the level is below the hose you are replacing.
• Keep coolant off painted surfaces.

Step 2: Remove the old hose clamps

• Use pliers to compress the spring clamps, or a flat-blade screwdriver if your hose uses screw clamps.
• Slide both clamps back on the hose away from the fittings.
• If the hose is stuck, use a coolant hose pick tool to gently break the seal.

Step 3: Remove the radiator hose

• Twist the hose slightly with your hands to break it loose.
• Pull the hose off the radiator neck and engine fitting.
• If it will not come off, use the hose pick tool carefully so you do not damage the plastic or metal neck.
• Inspect both fittings for cracks, corrosion, or stuck rubber.

Step 4: Install the new hose

• Compare the new hose to the old one to confirm the shape and length match.
• Slide the new clamps onto the hose first.
• Push the hose fully onto both fittings until it seats all the way against the stop.
• Position the clamps in the same location as the originals, just behind the raised bead on each fitting.
• Torque: Tighten any screw-style hose clamps to factory specification.

Step 5: Refill the cooling system

• Close the drain if it was opened.
• Use a funnel to refill with the correct Dex-Cool coolant mixture.
• Fill the reservoir to the proper mark.
• Leave the cap off for the initial bleed step.

Step 6: Bleed air from the system

• Start the engine and let it idle.
• Watch the coolant level and add coolant as the level drops.
• Turn the heater to full hot and the blower on low.
• Let the engine reach operating temperature and check for steady heat from the vents.
• Install the reservoir cap once the level stabilizes and no more air bubbles appear.

Step 7: Inspect for leaks

• With the engine running, inspect both hose ends for seepage.
• Look under the truck for drips.
• Shut the engine off and recheck the coolant level after it cools.

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✅ After Repair

• Test drive the truck and monitor the temperature gauge.
• Recheck coolant level after the engine cools completely.
• Inspect the hose again over the next few drives for any seepage.
• If the hose was split or the truck overheated, watch closely for repeated coolant loss.

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💰 DIY vs Shop Cost

Shop Cost: $180-$420 (parts + labor)

DIY Cost: $35-$120 (parts only)

You Save: $145-$300 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1-2 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.