Having problems with your 1999 Chevrolet Lumina ?
How to replace a waterpump on a 1999 chevy lumina?
The waterpump is located on passenger side of the car. Its location if you were standing looking from the passenger side at the engine is at the top right of the engine.There is a pully at the top of the engine that has 4 10mm headed bolts should be a non grooved pully.Loosen the bolts on that pully with the belt on once you loosen these bolts but do not remove them just yet.Using a 3/8 drive ratchet find the belt tensioner and release the belt making sure you remember the belt routing.Typically the the belt routing is printed on a plastic shroud that is just above the waterpump. Once you have removed the belt take out the 4 bolts that you previously loosened.Remove that pully now and the waterpump is right behind that. Sometimes the pully sticks a bit so you may need to put something behind it to gently dislodge it.There are 5 bolts on the waterpump the head of these bolts are 5/16 or 8mm remove the the five bolts using a quarter inch drive ratchet.Once this is done you may need to dislodge the pump.A dead blow hammer works well or a block of wood and a hammer could be used in a pinch.This should not require alot of force.Just a few taps should do it you are just breaking the gasket seal at this point.Now that the old pump is removed the old gasket needs to be removed from the waterpump housing. make sure all old gasket material is removed so the new one will seal properly.Take out the replacement pump and and line the new gasket on the waterpump once you have done this remove the gasket so you can adhere the gasket in place with a thin coat of rtv or weatherstrip adhesive.Now you ready to reverse the process to put it back on.Just make sure to line up the five bolt holes and your ready to go. Hope this helps.
Repair Help & Product Troubleshooting for 1999 Chevrolet Lumina
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