Cardenderek,
This info is totally bogus.You obviousely have never changed a water pump on a 6.6 liter Duramax Diesel engine.1st off it isnt belt driven it is gear driven from the drive train inside the engine.You have to remove the fan shroud,clutch fan assem.,and harmonic balancer as one of the mounting bolts is behind the balancer.Also remove the left side inner fender for easier access.
catD8RII
EASY EASY, find belt tensioner, turn one way to loosen belt and take belt off water pump. Undo water pump hoses ( you might want to drain cooling system first, not a must, but cleaner draining from bottom than all over the top) .. undo water pump pulley, may have to take fan and fan cover(Shroud) off to access pulley, then undo water pump bolts. pump is sealed in by an O-ring so might have to tug a little :) installation reverse of removal :)
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