Need to remove the water pump on 96 4.3l Sonoma

About Hours: 2.30

if you have no clue...don't attempt it yourself

The fan is installed/ removed with a special wrench designed specifically for the fan.

Is it dripping from the waterpump? Gradually getting worse?
It will appear to come from the back of the water pump. This means that you'll have to change out the pump itself.
Haven't actually done a sonoma..but basically the same on most vehicles. Pick up new pump from auto parts store. Some gasket sealer too is good idea. Also some anti freeze.

Drain antifreeze into bowl to reuse. Run it through a sock or other filter befor putting it back in.
Loosen and remove any belts. Remove the small bolts holding the pump to the block.
Possibly you may need to move stuff like the alternator to reach it??
Look at the new pump to see how many bolt holes, so you don't miss any.
Pull pump away. May need to tap the pump with hammer to bust it loose.
CLEAN the mounting surface. CLEAN the mounting surface. CLEAN the mounting surface.
Avoid gouging the surface. Apply film of gasket sealer to CLEAN surface, AND the gasket that came with the new pump. Block, Sealer, Gasket, Sealer, Pump. Position pump and bolt in place evenly. Snug up each side at same time step by step. Tighten firmly,but don't crank down too hard, you'll strip threads.
Restore any moved items, replace belts and tighten all up. Fill radiator. Start engine. Top up radiator. Top up again with gentle reving of engine. Close radiator. Fill top up bottle.
close hood if all seems ok.
Good luck

after remove the 4 nuts in water pump need to remove a large nut in front of the fan.
on the back of the fan right in front of the pulley is your large nut.. grab the right sized wrench and hold the fan so it doesnt turn and crank on it. it should come off..
**** have a reverse thread**** loose to right

The text below is from the GM Service manual 4.3L V6 Engine
Water Pump Replacement (4.3L)
Removal Procedure
Drain the cooling system. Refer to Draining and Filling Cooling System .
Loosen the water pump pulley bolts.
Remove the cooling fan and clutch assembly.

Tools Required
J 46406 Fan Clutch Wrench

Removal Procedure
Remove the upper fan shroud.
Remove the fan clutch from the water pump in a counterclockwise direction using the J 46406 .
Remove the fan clutch assembly.
Remove the drive belt. Refer to Drive Belt Replacement Remove the water pump pulley mounting bolts.
Remove the water pump pulley.
Remove the radiator outlet hose clamp from the water pump.
Remove radiator outlet hose from the water pump.
Remove the water pump mounting bolts.
Remove the water pump from the engine.
Remove the water pump gaskets.
Clean the water pump gasket mating surfaces.
Installation Procedure
Install the water pump gaskets.
Install the water pump to the engine.
Apply a sealer (GM P/N 12346004) to the bolt threads.
Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
Install the water pump mounting bolts.
Tighten
Tighten the mounting bolts to 41 N·m (30 lb ft).
Install the radiator outlet hose to the water pump.
Install the water pump pulley.
Install the water pump pulley bolts.
Tighten
Tighten the water pump pulley bolts to 25 N·m (18 lb ft).
Install the drive belt. Refer to Drive Belt Replacement in Engine Mechanical - 4.3L.
Install the fan clutch assembly.
Fill the radiator cooling system. Refer to Draining and Filling Cooling System .
Inspect the cooling system for leaks.

First remove the fan from the clutch. There should be four to six bolts holding the fan to the clutch. The clutch is held on to the pump with four bolts. remove the four bolts to remove the clutch. I've included a pic of the pump to indicate the four mounting holes. Not sure if the link will work.

http://www.1aauto.com/scripts/view_full_image.php?image_url=http://images.1aauto.com/EWP/1AEWP00011.jpg&description_id=1090439

When the fuel pump is short circuit it will start going bad and thus gets hot. Replace witha brand new one. It will not cost much.

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Hi there:

Ok 8th digit is a 4, that means you have a 2.2L engine. you will find your water pump located on the drivers side of the block just below the cylinder head. It is driven by a belt so it has a pully on the front of it that kind of hides it. there is no hoses attached to it as it pumps the coolant through the block.

Hope this helps.
Farrout!

You will need to lift up the bed of the car to access to the tank and remove the fuel pump.You need to remove the fuel tankfirst, than undo the bed bolts on the left side and loosen the bolts on the right side almost completely, then unbolt the filler neck and access to fuel pump.