How to Replace a Water Pump on an Chevrolet Cars

by Contributing Writer; Updated June 12, 2017

Although the water pump plays an important role in the engine's pulley system, the main purpose of the Chevrolet car water pump is to pull antifreeze from within the radiator, distribute that antifreeze throughout the engine, then route the antifreeze back to the radiator to be cooled. The Chevrolet car water pump is a fairly simple design, consisting of a rotor and a seal. When that seal breaks, the antifreeze leaks out of the front of the water pump. Unfortunately, the Chevrolet car water pump cannot be repaired, but replacing the water pump is fairly simple.

Under The Hood:

 How to Replace a Water Pump on an 08 Impala

Removal

Park the vehicle on a level surface and set the parking brake. Lift the vehicle hood and support it with the hood prop rod. Allow the engine to cool completely before continuing the process.

Loosen the coolant pressure cap, and wait for the pressure to relieve. Remove the coolant pressure cap.

Lift the front of the vehicle into the air with the floor jack. Place the jack stand’s under the sub frame. Lower the floor jack until the vehicle rests securely on the jack stands. Remove the floor jack.

Place the drain pan under the radiator drain cock. Rotate the radiator drain cock until coolant begins to drain from the radiator. Once all the coolant has drained, tighten the drain cock.

Remove the drain pan from under the vehicle and store it in a safe location.

Remove the bolts securing the intake manifold cover to the intake manifold. Remove the intake manifold cover.

Loosen the water pump pulley bolts with the socket and ratchet. Draw out a sketch of the accessory belt routing on a piece of paper for later use.

Place the drive end of the 3/8-inch ratchet into the square hole on the belt tensioner. Rotate the belt tensioner clockwise. Remove the belt from around the tensioner pulley. Remove the belt from the engine.

Remove the water pump pulley bolts, and remove the pulley from the water pump.

Remove the bolts securing the water pump to the timing cover. Remove the water pump and water pump gasket from the timing cover. Clean the mating surface on the engine block with the wire brush.

Installation

Place the new water pump gasket onto the timing cover, followed by the water pump. Install the water pump mounting bolts. Tighten the water pump mounting bolts to 89 inch-pounds with the torque wrench.

Place the water pump pulley onto the water pump. Install the pulley bolts hand tight.

Inspect the accessory drive belt for any cracks, glazing or other damage. Route the accessory belt around the engine accessories. Hold tension on the belt at the belt tensioner. Rotate the tensioner clockwise, and slide the belt around the tensioner pulley. Slowly release the tensioner until tension is applied to the belt.

Tighten the water pump pulley bolts to 18 foot-pounds with the torque wrench.

Install the intake manifold cover onto the intake manifold. Tighten the intake manifold cover bolts with the socket and ratchet.

Lift the front of the vehicle off of the jack stands with the floor jack. Remove the jack stands from under the vehicle. Lower the vehicle to the ground.

Coolant Filling Procedure

Slowly fill the cooling system through the coolant pressure cap neck. When the coolant level stabilizes, continue the process.

Install the coolant pressure cap one turn. Start the engine, and hold the engine speed at 2,500 rpmfor 40 seconds. Shut the engine off. Remove the pressure cap and slowly fill the cooling system again until the coolant level is visible and stable.

Install the coolant pressure cap one turn. Start the engine, and hold the engine speed at 2,500 rpm for 30 seconds. Shut the engine off. Fill the cooling system until the level is visible and stable.

Install the coolant pressure cap one turn. Start the engine, and hold the engine speed at 2,500 rpm for 20 seconds. Shut the engine off. Remove the pressure cap and fill until the coolant level is visible and stable. Install the pressure cap tight.

Fill the coolant recovery bottle to the full line, and then add an additional 13.5 ounces of coolant. Close the coolant recovery lid. Shut the vehicle hood.

Take the used coolant to a local shop or part's store for disposal.

Items you will need

  • Floor jack

  • Jack stands

  • Drain pan

  • Socket and ratchet set

  • Wire brush

  • New water pump

  • New water pump gasket

  • 2 Gallons DEXCOOL coolant

 How to Replace the Water Pump in a Cheverolet Cavalier

VIN 4 Instructions

Disconnect the negative cable from the Cavalier's battery. Drain the coolant from the system into a clean container by removing the drain plug under the engine.

Loosen the bolts on the water pump pulley. Remove the accessory drive belt by placing a wrench on the belt tensioner's lug and rotating it to loosen the tensioner.

Disconnect the water pump pulley, followed by the surge tank hose. Disconnect the bolts on the water pump, then remove the pump and gasket.

Attach the gasket to the new pump by applying a thin amount of sealer to the outer edge of the gasket's seating area. Install the new pump on the engine and torque the bolts to 18 foot pounds.

Reconnect the water pump pulley, but only tighten the bolts by hand at the moment. Connect the surge tank hose and accessory drive belt, then torque the pulley bolts to 22 foot pounds. Connect the negative battery cable and refill the cooling system.

VIN F Instructions

Drain the cooling system into the container and remove the negative battery cable. Remove the exhaust manifold if the Cavalier has automatic transmission; you'll need to remove the oxygen sensor's electrical connector, accessory drive belt, alternator, radiator inlet pipe, oil filler tube and the nuts and bolts connecting the manifold to the exhaust pipe and heater outlet hose.

Raise the car on the right front side and remove the wheel. Remove the liner for the front fender and the access plate on the water pump sprocket.

Remove the bolts holding the water pump sprocket to the pump--you must install a water pump holding tool (J43651) onto the sprocket and secure the tool to the engine front cover with the access plate's bolts. Remove the bolts attaching the engine block and front cover to the pump and the feed pipe to the thermostat. Remove the last two bolts and remove the pump.

Install the new water pump, using a threaded stud in the hub to align it with the pump sprocket. Tighten the two bolts securing it to the engine to 15 foot pounds.

Connect the bolts for for the engine front cover and engine block, torquing them to 15 foot pounds. Insert two of the bolts for the water pump sprocket, remove the threaded stud, insert the last bolt and tighten them all to 89 foot pounds. Remove the water pump holding tool.

Items you will need

  • Clean container

  • Jack stand

  • Lug wrench

  • Torque wrench

  • Water pump holding tool (J43651)

  • New water pump

  • Gasket sealant

  • Threaded stud

 How to Replace a Water Pump in a 1993 Chevy Silverado

Allow the Silverado to cool for several hours. Open the hood, and remove the radiator cap. Crawl under the front of the truck, and put the drain pan under the drain at the bottom of the radiator. Open the drain, and empty the radiator.

Locate the belt tensioner at the top corner of the engine. Turn the tensioner counter-clockwise with the 3/8-inch breaker bar and a socket, then pull the belt off the water pump.

Remove the hose on the water pump with the flat-head screwdriver. Unbolt the water pump from the engine block with the 3/8-inch ratchet, extension and sockets. Pull the water pump off the engine, then scrape the water pump mounting surface on the engine using the gasket scraper. Unbolt the water pump pulley from the water pump with the 3/8-inch ratchet and socket.

Install the pulley onto the replacement water pump with the 3/8-inch ratchet and socket. Install the replacement water pump gasket onto the replacement water pump, then install the replacement water pump onto the engine with the 3/8-inch ratchet and socket. Torque down the water pump bolts to 30 foot-pounds using the torque wrench and a socket.

Reinstall the water pump hose to the water pump with the flat-head screwdriver. Reinstall the belt on the water pump with the 3/8-inch breaker bar.

Fill the radiator with the 50-50 pre-diluted coolant. Start the truck, then let it run with the heater controls on high and at the hottest setting until the engine reaches normal operating temperature. Let the engine cool again, and fill the radiator with the 50-50 pre-diluted coolant. Reinstall the radiator cap.

Items you will need

  • Drain pan

  • Flat-head screwdriver

  • 3/8-inch ratchet, extension and socket set

  • 3/8-inch breaker bar

  • Gasket scraper

  • Replacement water pump

  • Replacement water pump gasket

  • 3/8-inch torque wrench

  • 50-50 pre-diluted coolant

 How to Replace the Water Pump in a Chevy Camaro

Remove the Old Pump

Remove the drain plug to the block coolant and the knock sensor. Place a drain pan underneath the radiator. When the engine is cool, drain the cooling system from the radiator into the pan.

Disconnect the negative battery cable.

Take apart the electrical connector from the cooling fan and disconnect the intake air temperature sensor electrical connector and the mass airflow sensor electrical connector.

Remove the air intake duct, the air cleaner assembly and both cooling fan assemblies.

Take apart the water pump, the inlet hose, the water outlet and the outlet hose.

Remove the air cleaner assembly, both cooling fan assemblies, the drive belt tensioner pulley and the drive belt.

Disconnect the inlet hose and the vent hose and the radiator.

Loosen and remove the water pump pulley and water pump bolts and remove both parts from the engine.

Attach the New Pump

Install the drain plug.

Put in the new water pump, equipped with a new gasket, tightening the bolts to 22 foot pounds on the year 2000 or higher and 18 foot pounds (25 Nm) on the 1999 models.

Reattach the water pump pulley, tightening the bolts to 18 foot pounds (25 Nm).

Reattach and reinstall all components in reverse order to their removal, tightening the belt tensioner pulley bolts to 37 foot pounds (50 Nm) and the air cleaner assembly bolts to 106 inch pounds (12 Nm).

Reattach the negative battery cable and refill the cooling system. Start the car and check for leaks when the engine reaches normal operating temperature.

 How to Replace the Water Pump in an S-10 2.2L

Open the hood and set the hood prop. Inspect beneath the hood and in the engine compartment for a belt routing diagram. If none is present, draw a box on a piece of paper to represent the engine. Draw circles on the box to symbolize the pulleys on the front of the engine, in the position that they appear. Draw a thick line between the pulleys to represent the routing of the drive belt.

Raise the front of the S-10 with a jack, on the driver's side of the truck. Place a jack stand beneath the front frame rail, just inward from the lower control arm. Lower the truck onto the jack stand. Lie beneath the front of the truck and slide your drain pan beneath the lower radiator hose, where it is joined to the rear of the radiator. Loosen the hose clamp on the radiator hose with a ratchet and socket. Remove the hose from the bottom of the radiator. Allow the coolant from the engine and radiator to drain into the pan.

Install the radiator hose back onto the radiator and tighten the clamp snug with a ratchet and socket. Raise the front of the truck off of the jack stand, then remove the stand from beneath the truck. Set the S-10 back on the ground.

Loosen the three mounting bolts on the front of the water pump pulley using a ratchet and socket. Do not remove the bolts completely. Depress the belt tensioner assembly by placing a 3/8-inch-drive ratchet into the provided hole at the top of the tensioner. Remove the drive belt from the engine completely.

Place a drain pan beneath the front driver's side of the engine, just below the pulley. Remove the water pump pulley mounting bolts completely, then remove the water pump pulley from the pump shaft. Remove the water pump mounting bolts completely from the water pump. Pull the water pump off the engine, and allow the remaining inner engine coolant to drain into the pan.

Scrape the water pump mounting surface using a straight razor blade. Remove the old gasket material and residue from the water pump mounting surface. Scrape outward from the water pump hole so you do not accidentally introduce foreign material into your cooling system.

Apply a thin even coat of gasket sealer or gasket maker to the new water pump. Apply another thin coat of either product directly onto the water pump engine mounting surface. Install a new water pump gasket onto the new water pump by hand, making sure to align all of the bolt holes.

Install the new water pump and gasket horizontally onto the engine, making sure you do not twist or turn the pump once it touches the engine. Turning the pump can cause the gasket to fall out of alignment with the pump. Press the pump with slight pressure against the engine mounting surface. Install the water pump mounting bolts and tighten them snug with a ratchet and socket.

Tighten the mounting bolts to 18 foot-pounds using a 1/2-inch-drive torque wrench and socket. Install the water pump pulley, and tighten the pulley bolts snug with your fingers.

Depress the belt tensioner and install the belt using the diagram on the truck or the one you drew. Release the tensioner slowly once the belt is in place. Check the vertical center alignment of the belt on each pulley. If the belt is not in the track of every engine pulley, depress the tensioner halfway and make the adjustments. Tighten the water pump pulley bolts to 18 foot-pounds with your torque wrench and a socket. Move your drain pan beneath the radiator.

Add engine coolant to the radiator until the radiator is completely full. Step to the driver's side of the S-10. Start the engine. Adjust the heater control panel switches to full heat, full fan speed and windshield defrost. Allow the truck to run for 20 to 30 minutes, or until all of the air pockets and bubbles stop exiting the radiator fill hole. Continually fill the radiator as the air escapes to compensate for the loss of fluid level. Shut the truck off when the air is bled out completely, then top off the radiator and install the cap.

Items you will need

  • Tire iron

  • Jack

  • Jack stand

  • 3-gallon drain pan

  • Pliers

  • 3/8-inch-drive ratchet

  • 3/8-inch-drive socket set

  • Straight razor blade

  • New water pump

  • Water pump gasket

  • Gasket maker or gasket sealer compound

  • 1/2-inch-drive torque wrench

  • 1/2-inch-drive socket set

  • 2-gallons Dex-Cool 50/50 Antifreeze

 How to Replace the Water Pump in a 97 Blazer

Pull your car into the garage, and turn it off. Open the hood, and take off the negative ("-") battery cable.

Put a bucket under the radiator, and position it so that it's centered under the drain plug. Pull the drain plug, and let all of the coolant drain out. When there is no more coolant in the truck, reconnect the drain plug.

Remove the bolts connecting the radiator shroud to the frame. Do this by getting the right size socket and turning the bolts counterclockwise. When the bolts are off, the shroud will come off easily by hand.

Check the fan shroud for a diagram of the routing of the serpentine belt. If there is no diagram, grab a piece of scrap paper and pen and draw a diagram so that you will know how to put the serpentine belt back on when your putting the new water pump on.

Find the right-sized socket that fits the pulley tensioner bolt, and loosen it just enough to remove the belt from the water pump pulley.

Take the radiator and heater hoses off of the water pump. Squeeze the clamp with a pair of needle-nose pliers so that it gets bigger, and move it down the hose. Pull the hose from the water pump. The heater hose is located on top of the water pump, and the radiator hose is on the bottom of the water pump.

Remove the bolts holding the water pump to the engine. You need to turn them counterclockwise. If you can't remove the water pump after you have removed the bolts, then take a rubber hammer and tap on the pump until it becomes loose.

Put paint thinner on a rag, and clean off any of the old gasket from the engine. This will ensure a tight seal of the new gasket.

Put some RTV sealant on the new gasket, and put the gasket on the new water pump. Put the new water pump back into the engine, and finger tighten the bolts. Use your torque wrench to make the bolts tight.

Reinstall the radiator and heater hoses on to the water pump. The radiator hose goes on the bottom and the heater hose gets attached to the top of the water pump.

Put the serpentine belt back onto the water pump. Make sure that you check your diagram to see that you are putting the belt on correctly. Turn the tensioner bolt clockwise while using a pry bar to pull the water pump toward you.

Reinstall the radiator shroud by turning the bolts clockwise.

Reconnect the negative battery cable.

Turn the car on, and let it run until it gets to running temperature. That way any air in the lines will escape out of the open radiator. When you are satisfied that there isn't any more air, then you can put the cap back on the radiator; make sure that the cap is tight.

Items you will need

  • Coolant

  • Bucket

  • Pry bar

  • Socket set, 3/8-inch drive

  • RTV sealant

  • Torque wrench

  • Needle-nose pliers

 How to Change the Water Pump on a 2003 Chevy Trailblazer

Removal

Make sure the engine is cool before you begin working. Disconnect the battery's negative cable using a wrench on the cable clamp nut.

Place a large container under the radiator, remove the radiator cap and detach the lower radiator hose by loosening its clamp with pliers. Pour the engine coolant into the container through the hose.

Loosen the clamps for the fan duct and resonator and disconnect the air temperature sensor connector, disconnect the fuel pressure vacuum line and remove the resonator's mounting bolts.

Unbolt and remove the air intake baffle from the radiator support. Disconnect the upper radiator hose and electrical connectors. Turn the fan clutch hub counterclockwise to remove it from the pump and then unclip and remove the shroud.

Rotate the drive belt's tensioner pulley clockwise with the wrench and slip the serpentine belt off the pulleys. Make sure you know the exact path the belt is routed on the pulleys.

Hold the water pump pulley in place with a strap wrench and remove the pulley's four bolts with a wrench. Remove the pulley.

Unscrew the water pump's five mounting bolts with the flare-nut wrench and remove the pump; if the pump is stuck, tap it with a soft-faced hammer.

Installation

Clean all traces of the gasket material from the engine block using a rag soaked in acetone or lacquer thinner

Apply a thin coating of RTV sealant to both sides of a new gasket and install it on the replacement water pump.

Position the water pump on the engine and apply the bolts, making sure the pump gasket stays in position. If you have a torque wrench, tighten the bolts to 89 inch-pounds. Install the pulley and tighten its bolts to 18 foot-pounds.

Re-install the drive belt by loosening the tensioner and slipping the belt onto the pulleys.

Install the radiator shroud, fan clutch assembly and the air intake duct and resonator in the reverse order of removal. Reconnect the negative battery cable.

Fill the radiator with engine coolant at the radiator filler neck, using a fresh half-and-half mix of water and antifreeze if the old coolant is contaminated.

Items you will need

  • Wrench

  • Pliers

  • Large container

  • Strap wrench

  • Flare-nut wrench

  • Soft-faced hammer

  • Rag

  • Lacquer thinner/acetone

  • RTV sealant

  • Water pump

  • Water pump gasket

 How to Change a Water Pump on a 98 Chevy Blazer

Place the drain pan under the radiator and open the petcock. Allow the antifreeze to drain. Close the petcock. Remove the upper radiator hose, using the screwdriver. Locate the bolts securing the fan shroud to the radiator. Remove these bolts, using a 10mm socket and ratchet.

Loosen all four bolts securing the engine fan to the water pump, using a 13mm wrench. Just loosen the bolts--do not remove them. Relieve the tension on the serpentine belt, using a wrench to move the tensioner away from the belt. Remove the belt from the alternator and the water pump pulley.

Remove the four bolts from the engine fan to water pump pulley. Lift the fan and fan shroud as a pair straight up and out of the vehicle. Remove the water pump pulley by pulling it off.

Remove all the hoses attached to the water pump by removing the clamps and pulling them off. They may have one of two different types of clamps. One is the type that could be loosened with a screwdriver and the other is a spring type. The spring type needs to be squeezed with pliers to loosen it.

Remove the four bolts securing the water pump to the block. There are two 4-inch bolts on each side of the water pump. Remove these with a 15mm socket and ratchet. Pull the pump off.

Clean all the gasket material off the two openings in the block where the water pump seals using the gasket scraper. Clean these areas well and wipe off with a cloth so they do not leak later. Smear a smooth coat of RTV on both sides of the new gaskets. Place the gaskets on the water pump and allow the RTV to set for five minutes.

Place the water pump bolts in the holes in the water pump. Hold the top two bolts and carefully move the pump toward the block, constantly watching the alignment of the two top bolts with the holes in the block. Start to thread the two top bolts in their holes in the block. Look at the gasket and if it is in place, push the pump toward the block and thread the bottom bolts into the block. Now tighten all four bolts using, the 15mm socket and ratchet.

Attach the hoses and tighten the clamps. Install the rest of the parts in reverse order of removal and fill the radiator with a 50-50 mix of antifreeze and water.

Items you will need

  • Set of wrenches

  • 3/8-inch drive sockets

  • 3/8-inch drive ratchet

  • Common screwdriver

  • Gasket scraper

  • RTV silicone sealant

  • Drain pan

  • 1 gallon antifreeze

  • Pair of pliers

 How to Change a Water Pump on a 2003 Chevy Cavalier

Disconnect the negative battery cable from the battery using an 8 mm wrench and lay it aside. Place a drain pan under the driver-side front of the Cavalier and open the drain valve located on the bottom of the radiator. Remove the radiator cap from the coolant reservoir and allow the coolant to drain into the drain pan.

Remove the serpentine belt, using a belt removal tool positioned on the tensioner pulley bolt to rotate the tensioner clockwise while sliding the belt off the alternator pulley. Disconnect the electrical connector from the alternator by pushing the release tab and then pulling the connector from the back of the alternator. Remove the two 13 mm alternator bolts, located in the front of the alternator bracket, using a 13 mm socket and ratchet. Add an extension to the socket and ratchet and remove the rear 13 mm alternator bolt located below the alternator bracket reinforcing rib on the back of the alternator. Slip the alternator from the bracket and lay it aside.

Remove the 10 mm water pump pulley bolts using a 10 mm wrench. Remove the 8 mm water pump mounting bolts using a socket, extension and ratchet. Use a screwdriver to pry the water pump from the front of the motor. Clean the gasket surface on the engine using a gasket scraper until all traces of the gasket are gone.

Attach the new gasket to the new water pump using gasket adhesive and install the new pump into the front of the engine. The gasket on the water pump in the Cavalier can be a little tricky to place, but it will only go on one way. Torque the water pump bolts to 18 ft-lbs. using a torque wrench.

Reinstall the water pump pulley and tighten the bolts securely. Reinstall the alternator and serpentine belt. Retighten the water pump pulley one final time with the belt installed to prevent loosening caused by vibration.

Close the drain valve on the bottom of the radiator and fill the engine with a 50/50 mix of fresh coolant. Remove the bleed valve on the top of the thermostat housing to vent air from the system. Reinstall the bleed valve when coolant starts to escape. Start the engine and add coolant to the engine as it is drawn from the coolant reservoir. Fill the reservoir to the full level on the reservoir, and reinstall the radiator cap.

Items you will need

  • Socket set

  • Wrench set

  • Screwdriver set

  • Serpentine belt removal tool

  • Drain pan

  • Gasket scraper

  • Gasket adhesive

  • Torque wrench

  • New water pump

  • Antifreeze/coolant

 How to Change the Water Pump on a 350 Chevy

Drain the antifreeze from within the transmission by twisting the drain bolt on the bottom of the radiator with a pair of pliers or with a wrench. Insert the drain plug back into the radiator after the antifreeze has finished draining.

Loosen the alternator and power steering pump to remove their belts from the water pump pulley. Both the alternator and, if applicable, the power steering pump attach to the sides of the engine with two mounting brackets. At the top and bottom of each accessory is a single bolt, which holds the accessory to its brackets. Loosen these bolts with a wrench, then lower the accessory towards the engine to remove the tension on its drive belt, then lift the belt off of the pulley on the water pump.

Remove the fan blades and the pulley from the front of the water pump. The four fan blades are a single unit attached to the tip of the water pump with four bolts. Remove the bolts with a wrench, then pull the fan blade assembly off of the water pump. Lift the pulley off of the front of the water pump.

Disconnect the lower radiator hose from the passenger's side of the water pump. The hose is attached to the pump with a single clamp. Turn the screw on the clamp in a counterclockwise direction with a screwdriver to loosen it, then pull the hose off of the water pump.

Remove the four bolts which hold the water pump to the engine and pull the pump away from the engine to remove it. Peel the two gaskets on the back of the water pump off of the pump.

Apply gasket sealer to each side of both water pump replacement gaskets, then place the gaskets against the pump. Press the pump into place against the engine, then install and tighten each of the pump's four retaining bolts with a wrench.

Slide the lower radiator hose onto the water pump and tighten the hose clamp to secure the hose in place. Position the fan blade assembly onto the tip of the pump, then install and tighten each of the assembly's four retaining bolts with a wrench.

Place the pump's pulley onto the front of the water pump, then position both the alternator and power steering pump belts into the grooves of the pulley. Pull the alternator away from the engine to tighten its belt, then tighten both of the alternator's retaining bolts with a wrench. Tighten the power steering pump's belt the same way.

Wait a minimum of three hours for the gaskets sealer to dry, then fill the radiator with antifreeze to complete the replacement.

Items you will need

  • Pliers

  • Wrench

  • Screwdriver

  • Gasket sealer

  • Water pump gaskets

  • Antifreeze

 How to Change the Water Pump in a Chevy S10

Removal

Disconnect the truck's negative battery cable.

Open the radiator cap in the engine, then open the drain plug on the radiator and let the engine coolant drain into a large container.

Loosen the hose clamps for the upper air intake duct with a screwdriver and detach the duct. Unscrew and remove the upper fan shroud, remove the nuts connecting the fan clutch assembly to the water pump using a wrench and remove the fan clutch.

Rotate the drive belt tensioner with a socket wrench, thus relieving the belt tension, and remove the drive belt. Unbolt and remove the water pump pulley.

Detach the heater hose and the radiator hose from the pump if they are present. This should be the case on an S10 with a V6 engine.

Remove the water pump's bolts with your wrench and remove the pump. If the pump does not come off easily, tap it with a soft hammer to break it free from its gasket.

Installation

Wipe the mating surface of the engine block clean using a rag soaked with acetone or lacquer thinner.

Apply RTV sealant to the replacement pump's gasket on both sides and then install the gasket on the pump.

Install the replacement pump on the engine and apply the bolts, tightening them by hand first and then using your wrench while making sure the gasket does not slip out of position. Connect the hoses to the pump if needed.

Reinstall the water pump pulley and then the drive belt with the socket on the tensioner. Make sure the belt follows the same path along the pulleys as before. A diagram should be available on the radiator shroud.

Install the fan clutch assembly and the radiator shroud with their mounting nuts and screws and then connect the upper air intake duct with its clamps.

Refill the engine coolant at the radiator filler neck. Use a fresh 50/50 mix of antifreeze and water if the old coolant is dirty.

Reconnect the battery cable.

Items you will need

  • Large container

  • Wrench

  • Screwdriver

  • Water pump and gasket

  • Rag

  • Acetone

  • Antifreeze

  • Water

 How to Replace the Water Pump on a 1997 Chevy Lumina Ls 3.1 V6

Disconnect the negative battery cable with an adjustable wrench. Allow the engine to cool completely before continuing.

Place a drain pan under the radiator. Locate the drain plug on the bottom of the radiator and turn the plug counter clockwise with pliers to open. Drain the coolant into the drain pan and dispose of it properly according to local regulations. Disconnect the coolant overflow hose from the radiator with pliers. Remove the mounting fasteners from the coolant reservoir with a socket wrench and remove the reservoir from the work area.

Loosen the bolts on the water pump pulley with a socket wrench. A screwdriver may be needed to keep the pulley from spinning. Remove the drive belt. Rotate the belt tensioner counterclockwise with a socket wrench to create slack in the belt. Slip the belt off the tensioner and remove it from the other belt accessories. Remove the pulley bolts and remove the pulley. Remove the water pump bolts with a socket wrench and remove the pump from the work area. Clean any gasket material from the engine with a gasket scraper.

Install the new water pump and gasket using your fingers to get the bolts started. Tighten the mounting bolts with a torque wrench to 89 in-lbs. Install the water pump pulley and tighten the bolts with a socket wrench. Use a screwdriver if necessary to keep the pulley from spinning. Rotate the belt tensioner counterclockwise with a socket wrench and install the drive belt. Release the belt tensioner to tighten the drive belt.

Install the coolant reservoir and tighten the mounting bolts with a socket wrench. Install the overflow hose to the radiator with pliers. Tighten the radiator drain plug with pliers. Fill the radiator with coolant until the reservoir reaches the full line. Connect the negative battery cable with an adjustable wrench. Start the vehicle and make sure coolant is not leaking and the water pump is working properly.

Items you will need

  • Socket wrench

  • Adjustable wrench

  • Gasket scraper

  • Screwdriver

  • Pliers

  • Torque wrench

  • Engine coolant

 How to Replace the Water Pump on a 1999 2.4 L Chevy Malibu

Disconnect the negative batter cable with a ratchet and socket, raise the front of the vehicle with a jack, and allow the car to rest on the jack stands.

Drain the radiator by loosening the drain bolt at the bottom lest side of the radiator with a ratchet and socket and allowing the coolant to drain into a drain pan.

Place the jack underneath the engine oil pan, but place a folded towel between the jack and oil pan to protect the oil pan. Raise the jack up to the bottom of the pan, unbolt the left engine mounting bolt, and carefully remove the engine mount. Locate the water pump located to the left of the engine, directly below the exhaust manifold, and use pliers to detach the hoses from the water pump by pressing the wire hose clamps together with pliers and pulling the hose off with your hands.

Unbolt the crankshaft pulley, located in the center of the pulley, using a ratchet and socket, and carefully remove the timing chain.

Unbolt the water pump with a ratchet and socket, then remove the water pump with your hands. Remove the old gasket from the water pump mounting plate by using a sharp putty knife or razor blade to scrape the surface clean.

Install the new gasket on the mounting plate, reinstall the water pump, and follow the previous steps in reverse to finish the installation, while being sure to torque the water pump mounting bolts to 18 foot-pounds of pressure using a torque wrench. Afterwards, refill the radiator with coolant and water.

Items you will need

  • Ratchet and socket

  • Jack

  • Jack stands

  • New water pump and gasket

  • Torque wrench

  • Coolant

  • Drain pan

  • Towel

  • Pliers

  • Flat head screwdriver

  • Putty knife

 How to Replace the Water Pump in a Chevy Silverado

Disconnect the negative battery cables and drain the coolant from the radiator. Remove the fan shroud while the coolant is draining.

Remove the serpentine belt and the water pump hoses, which are attached to the water pump.

Loosen and remove the bolts attached to the water pump and fan. Be careful not to cause damage to the radiator while doing so.

Remove the fan from the water pump by using a wrench on the fan nut and a strap wrench on the pulley.

Attach the thermostat with its housing onto the new water pump. Install the fan onto the new pump and tighten the bolts lightly.

Clean the water pump mating surface on the block with a scouring pad and scraper and install the new water pump, tightening the bolts to spec. Reattach all the hoses to the pump.

Reinstall all components in the same order as you removed them.

Reconnect the negative battery cable and refill the coolant. Start the engine and check for leaks when it reaches normal operating temperatures.