HOW DO I CHANGE A WATER PUMP ON A 2002 SILVERADO 2500HD WITH AN 8.1?

  • Tiny
  • Chevy_man2002
  • 2002 CHEVROLET SILVERADO

I recently found antifreeze running off the front of my motor and it looks like the water pump. I've changed water pumps before just not on an 8.1.

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Thursday, September 13th, 2012 AT 4:58 PM

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  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

Drain the cooling system.
Remove the drive belt.
Remove the fan clutch.
Reposition the outlet hose clamp at the water pump.
Remove the outlet hose from the water pump.

Reposition the bypass hose clamps at the water pump and water crossover.
Remove the bypass hose.

Remove the water pump bolts.
Remove the water pump.
Remove and discard the water pump gaskets.
Installation Procedure

Place NEW water pump gaskets into place.
Install the water pump.
Notice: Refer to Fastener Notice in Service Precautions.

Install the water pump bolts.
Tighten the water pump bolts to 50 Nm (37 ft. Lbs.).

Install the bypass hose.
Position the bypass hose clamps at the water pump and water crossover.

Install the outlet hose to the water pump.
Position the outlet hose clamp at the water pump.
Install the fan clutch.
Install the drive belt.
Fill the cooling system.

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Thursday, September 13th, 2012 AT 5:38 PM

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