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How to Replace the Water Pump on a 1994 Chevrolet K1500

A Chevrolet K1500 is a pickup truck with four-wheel drive and a nominal carrying capacity of 1/2 ton. The 1994 model belongs to the fourth generation of this series, which was in production from 1988 to 2000. The water pump in the 1994 Chevrolet K1500 attaches to the front of the engine and is accessible from the engine compartment. The replacement of the water pump in this vehicle also requires you to drain the cooling system and remove additional components from the engine.

Instructions

1

Disconnect the cable to the negative battery terminal with a socket wrench to ensure you dont inadvertently start the engine. Put a drain pan under the radiator and open the radiator drain. Allow the coolant to drain from the radiator and replace the radiator drain plug.

2

Disconnect the drive belts on the engine with a socket wrench and remove the alternator. Disconnect the cooling fan assembly, including the clutch and pulley. You might also need to remove some accessory brackets to access the water pump. Remove the radiator hose and heater hose from the water pump. Disconnect the bypass hose from the water pump if your vehicle has a 7.4-liter engine.

3

Use a socket wrench to remove the mounting bolts that attach the water pump to the timing chain cover. Detach the water pump from the timing chain cover and discard the water pumps gasket.

4

Clean the timing chain cover with a shop towel to remove any traces of the old gasket. Install the new water pump and gasket to the timing chain cover. Tighten the mounting bolts for the water pump to 30 ft. lbs. with a torque wrench.

5

Connect the hoses to the water pump. Install the alternator and any other components you removed to access the water pump. Connect the drive belts to their respective pulleys. Fill the radiator with coolant and connect the cable for the batterys negative terminal.