How to Remove a Chevy 4.8L Water Pump
The 4.8L Chevrolet engine is found most commonly in Chevrolet Silverado pickups. These engines are part of the LS line of engines, which is a variation on the popular small-block Chevy V8. The water pump on these engines circulates coolant between the engine and the radiator, When the water pump goes out, the coolant won't circulate and can overheat, potentially damaging the engine. To fix the problem, the water pump should be removed and replaced with a new one, but first, it has to be taken out.
Other People Are Reading
Things You'll Need
- Drain pan
- Flat-head screwdriver
- 3/8-inch breaker bar
- 3/8-inch ratchet and socket set
- 24-inch pry bar
- Open-end wrench set
- Pliers
Instructions
-
-
1
Allow the engine to cool for several hours prior to working on the vehicle. Put the drain pan underneath the core support on the front of the vehicle and open the petcock on the bottom of the radiator. Drain all of the coolant from the radiator.
-
2
Pop the hood. Remove the intake tubing between the air filter and the throttle body using the flat-head screwdriver. Pull the tubing away from the throttle body and put it to the side. Unbolt the fan shroud from the engine using the 3/8-inch ratchet and socket.
-
-
3
Set the pry bar between two of the bolts on the water pump pulley to hold the pulley steady. Remove the fan and fan clutch from the pulley using an open-end wrench. Set the fan to the side. Attach a socket to the 3/8-inch breaker bar and turn the tensioner with it. Pull the belt off the engine.
-
4
Pinch the spring clamps holding the radiator hoses to the water pump using the pliers. Pull the clamps back, then pull the hoses off the water pump. Unbolt the water pump from the engine using the 3/8-inch ratchet and socket, then lift it up and out of the way.
-
1
