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Anonymous
Anonymous Posted on Oct 01, 2009
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How to change water pump (1997 sonoma)

I need step by step instructions on how to change the water pump on a 1997 sonoma? will I have to remove the belt and is there a pully?

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  • 4 more comments 
  • Anonymous Oct 01, 2009

    v6 3.4 maybe? I know it's a v6 I don't have the truck with me right now.

  • Anonymous Oct 03, 2009

    4.3 v6 1997 sonoma.

  • Anonymous Oct 03, 2009

    4.3 v6 1997 sonoma.

  • Anonymous Oct 03, 2009

    4.3 v6 1997 sonoma.

  • Marvin
    Marvin May 11, 2010

    need to know the right engine, please no guessing., I do this for free so need accurate info before try to find the info for you.

  • Marvin
    Marvin May 11, 2010

    first question here is what engine do you have??

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1 Answer

Marvin

Marvin

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  • GMC Master 85,242 Answers
  • Posted on Oct 03, 2009
Marvin
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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.

Testimonial: "Thanks I appreciate it"

  • Anonymous Dec 08, 2011

    Thank you very much. The tool for removing the fan clutch is different from any I've used before.

  • Marvin
    Marvin Dec 08, 2011

    You are welcome

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