🔧 Pacifica - Radiator Hose Replacement

Replacing a radiator hose fixes coolant leaks and prevents overheating. On your Pacifica, the two main radiator hoses are the upper hose (top of radiator to engine) and the lower hose (bottom of radiator to engine/water pump area).

Difficulty Level: Intermediate | Estimated Time: 1.0-2.5 hours

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⚠️ Safety & Precautions

• ⚠️ Never open the coolant reservoir/cap hot—let it cool fully first.
• ⚠️ Coolant is toxic; keep away from kids/pets and clean spills immediately.
• ⚠️ Hybrid caution: do not touch or disturb any orange high-voltage cables/connectors.
• ⚠️ If you raise the van, support it with jack stands—never rely on a floor jack alone.
• ⚠️ Battery disconnect is not required for this job, but keep the vehicle OFF and the key fob away from the van to prevent unintended system wake-up.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Drain pan (at least 3-gallon)
• Funnel
• Trim clip removal tool
• Flat-blade screwdriver
• 8mm socket
• 10mm socket
• 1/4" ratchet
• Pliers
• Hose clamp pliers (specialty)
• Pick tool (small)
• Shop rags
• 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
• Engine coolant (Mopar OAT 10-Year/150,000-mile equivalent) - Qty: 1-2 gallons
• Distilled water - Qty: 1 gallon

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📋 Before You Begin

• Park on level ground, set the parking brake, and use wheel chocks.
• Let the engine cool completely (cool upper hose should feel cool to the touch).
• Place a drain pan under the front of the van before loosening any hose.
• Hose clamp pliers squeeze spring clamps safely.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve cooling system pressure

• Put on safety glasses and nitrile gloves.
• Place shop rags around the coolant reservoir/cap area.
• Slowly loosen the coolant reservoir cap by hand to vent any pressure, then remove it.

Step 2: Create access to the hose you’re replacing

• Upper hose access: Open the hood and use a flashlight to locate the upper hose at the top of the radiator.
• Lower hose access: Use a floor jack (rated 3-ton minimum) to lift the front, set the van on jack stands (rated 3-ton minimum), then remove the lower splash shield fasteners using a trim clip removal tool and 10mm socket.

Step 3: Drain enough coolant to prevent a big spill

• Position the drain pan (at least 3-gallon) directly under the lower radiator hose area.
• If there’s no easy drain, you’ll “drain” by carefully removing the hose at the radiator end first.
• Expect some spill—aim the hose into the pan.

Step 4: Remove the hose clamps

• If you have spring clamps, squeeze and slide them back using hose clamp pliers (specialty).
• If you have worm-gear clamps, loosen them using an 8mm socket or flat-blade screwdriver, then slide them back.

Step 5: Break the hose free (don’t force it)

• Twist the hose gently by hand to break the seal.
• If it’s stuck, use a pick tool (small) to carefully lift the hose edge to let air in, then twist again.
• Pull the hose off and aim it into the drain pan.
• Do not pry hard on plastic radiator necks.

Step 6: Prep the fittings and compare the new hose

• Wipe the radiator and engine fittings with shop rags until clean and smooth.
• Compare the old hose to the new hose (same bends, same length, same end sizes).
• Slide the clamps onto the new hose before installing it (use pliers if needed).

Step 7: Install the new hose

• Push the hose fully onto the fitting(s) until it seats against the stop/bead.
• Reposition the clamp(s) to the same spot as factory—typically just behind the raised bead on the fitting.
• Tighten worm-gear clamps with an 8mm socket or flat-blade screwdriver until snug (do not crush the fitting).
• Release spring clamps with hose clamp pliers (specialty) and confirm they sit squarely.

Step 8: Reinstall shields (lower hose only)

• Reinstall the splash shield using a 10mm socket and trim clip removal tool.
• Lower the van safely using the floor jack and remove the jack stands.

Step 9: Refill coolant

• Use a funnel to refill the coolant reservoir with the correct Mopar OAT equivalent coolant mix.
• If using concentrate, mix with distilled water to a 50/50 blend before filling.

Step 10: Bleed air and check for leaks

• Start the vehicle and set the HVAC to MAX HEAT with the blower on medium.
• Let it warm up while watching the temperature gauge and looking for leaks with a flashlight.
• Shut it off, let it cool, then recheck the coolant level and top off as needed using a funnel.

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✅ After Repair

• Check for drips around both hose ends after a short drive.
• Recheck coolant level the next morning (engine cold) and top off if needed.
• Inspect the old hose clamps; replace any that are rusted, bent, or weak.
• Dispose of old coolant properly (parts store recycling or local hazardous waste).

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💰 DIY vs Shop Cost

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

DIY Cost: $40-$160 (parts only)

You Save: $210-$390 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 1.0-2.5 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.