🔧 Traverse - Radiator Hose Replacement

On your Traverse, a radiator hose replacement usually means swapping either the upper hose (top of radiator to engine) or the lower hose (bottom of radiator to engine/water pump). The job is mainly about safely releasing cooling-system pressure, removing the clamps, and refilling coolant without introducing air pockets.

Difficulty Level: Intermediate | Estimated Time: 1.0-2.0 hours

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⚠️ Safety & Precautions

• ⚠️ Never open the coolant cap hot; pressure can spray boiling coolant.
• ⚠️ Let the engine cool fully (upper hose should feel cool).
• ⚠️ Use jack stands if you raise the front; never rely on a jack alone.
• ⚠️ Keep coolant off belts, pulleys, and electrical connectors.
• ⚠️ Coolant is toxic—keep away from kids/pets and clean spills immediately.

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🔧 Required Tools

You'll need the following tools for this repair:

• Nitrile gloves
• Safety glasses
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Drain pan (at least 2-gallon)
• Funnel
• Shop rags
• Hose clamp pliers (specialty)
• Slip-joint pliers
• Pick tool
• Trim clip removal tool
• 10mm socket
• 3/8" ratchet
• Extension (3" to 6")
• Flat-blade screwdriver
• Flashlight

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Upper radiator hose - Qty: 1
• Lower radiator hose - Qty: 1
• Radiator hose clamps - Qty: 2
• Dex-Cool coolant (50/50 premix) - Qty: 1-2 gallons

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📋 Before You Begin

• 🅿️ Park on level ground, set the parking brake, and chock the rear wheels.
• 🧊 Let the engine cool completely before touching any hoses or opening the coolant cap.
• 🧼 Place a drain pan under the front of the vehicle and keep rags ready.
• 🧰 If you’re doing the lower hose, raise the front with a floor jack and support it on jack stands.
• 🧠 Hose clamp pliers are pliers that lock onto spring clamps so they don’t slip.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Identify which hose you’re replacing

• Use a flashlight to trace the leak or soft/bulged hose.
• Upper hose: runs from the top of the radiator to the engine.
• Lower hose: runs from the bottom of the radiator to the engine area (often harder to access).

Step 2: Relieve cooling system pressure (cold engine only)

• Put on nitrile gloves and safety glasses.
• Slowly loosen the coolant reservoir/pressure cap by hand. Stop if you hear pressure. Wait until it’s fully calm, then remove it.

Step 3: Gain access to the hose connections

• If needed, remove the engine cover using a 10mm socket, 3/8" ratchet, and extension (3" to 6").
• If a plastic air duct or shroud blocks access, release clips using a trim clip removal tool and loosen any clamps with a flat-blade screwdriver.

Step 4: Drain enough coolant to get below the hose level

• Position a drain pan (at least 2-gallon) under the radiator hose you’re removing.
• If you can access a radiator drain, open it carefully; otherwise, be ready for coolant to spill when the hose comes off.
• Use shop rags to control the initial spill.

Step 5: Remove the clamp(s)

• For factory-style spring clamps, squeeze and slide them back using hose clamp pliers (specialty) or slip-joint pliers.
• For screw-style clamps, loosen them using a flat-blade screwdriver.

Step 6: Remove the old radiator hose

• Twist the hose to break it loose before pulling.
• If it’s stuck, gently work around the end with a pick tool to break the seal.
• Pull the hose off and let coolant drain into the drain pan.
• Don’t pry hard on plastic fittings.

Step 7: Prepare the fittings and install the new hose

• Wipe the radiator/engine hose necks clean using shop rags.
• Slide the clamp(s) onto the new hose before installing it.
• Push the new hose on fully until it bottoms out on the stop/bead.
• Position the clamp in the same spot as original (behind the raised bead) using hose clamp pliers (specialty) or a flat-blade screwdriver depending on clamp type.

Step 8: Reinstall any removed covers/ducting

• Reinstall ducts, shrouds, and the engine cover using the trim clip removal tool (for clips) and 10mm socket with a 3/8" ratchet.
• Double-check nothing is rubbing the new hose (fan shroud edges, brackets, or other hoses).

Step 9: Refill coolant

• Use a funnel to refill the reservoir with Dex-Cool coolant (50/50 premix) to the indicated “FULL COLD” line.
• Leave the cap off for the initial air purge step.

Step 10: Purge air and check for leaks

• Start the engine and set the HVAC to heat (hot) and fan on medium.
• Let it idle and watch the coolant level; add coolant as the level drops using a funnel.
• When the engine warms up, carefully check both hose ends for seepage.
• Once the level stabilizes, install the cap by hand and shut the engine off.
• After it fully cools, recheck the level and top off to “FULL COLD” if needed.

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✅ After Repair

• 🧪 Test drive 10-15 minutes, then recheck for leaks with a flashlight.
• 🧊 After the next full cool-down, recheck coolant level and add Dex-Cool coolant (50/50 premix) if it’s low.
• 🧼 Rinse any spilled coolant off splash shields with water and wipe up puddles.
• 🗑️ Dispose of old coolant properly (many parts stores take it).

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💰 DIY vs Shop Cost

Shop Cost: $250-$550 (parts + labor)

DIY Cost: $40-$140 (parts only)

You Save: $110-$510 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-2.0 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.