Water pump 99 Buick park ave

Look on the vin, eighth character determines the procedure, both are described below.
Removal and Installation ("C", "G" & "H" Bodies - VIN "1")

1. Disconnect negative battery cable. Remove A/C compressor splash shield. Loosen water pump
pulley bolts. Drain cooling system. Remove drive belts. Remove coil pack. Remove
supercharger belt tensioner.
2. Remove engine mount. Remove power steering pump. Remove engine mount bracket. Remove
idler pulley. Remove water pump pulley. Remove water pump and gasket. To install, reverse
removal procedure using NEW gasket. Fill and bleed the engine cooling system. See
COOLING SYSTEM BLEEDING.
Removal & Installation ("C" & "H" Bodies - VIN "K")

Drain cooling system. Loosen water pump pulley bolts. Remove drive belt. Remove water pump
pulley bolts and pulley. Remove water pump and gasket. To install, reverse removal procedure using
NEW gasket. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING.
Removal & Installation ("G" Body - VIN "K")

1. Drain cooling system. Remove air cleaner assembly. Remove water pump belt cover. Remove
water pump drive belt. Remove by-pass hose. Remove lower radiator hose from thermostat
housing.
2. Remove bolts from water pump cover. Remove water pump cover. Remove water pump, pump
seal, and gasket from housing using Water Pump Remover (J-38816-1A). Turn tool clockwise
in order to remove water pump. Remove water pump. To install, reverse removal procedure
using NEW gasket. Fill and bleed cooling system. See COOLING SYSTEM BLEEDING.
Except "W" Body

1. Fill radiator to base of filler neck. Start engine. Place A/C-heater control in any position except
MAX. Select highest temperature setting. Idle engine until lower radiator hose is hot.
2. Increase engine speed to 3000 RPM and then back to idle. Do this 5 times to expel any air
trapped in system. Fill radiator as necessary. Install radiator cap. Allow engine to cool. Fill
coolant recovery reservoir as necessary.