2002 Chevy Malibu coolant leaking from underneath engine what could be the cause?
Water pump, thermostat housing or hose.
I agree with TOM, look at the weep hole at the bearing of the waterpump...this is where the leaks DO happen to warn you from a catastrophic failure, involving the fan and the radiator (depending on which model)....but water pup ain't no mo~ and only 17 dollars~ https://www.google.com/#q=2002+chevrolet+malibu+water+pump&tbm=sh op
When you park your car, where is the leak? The fluid will fall straight down due to the gravational pull of the earth. So where the puddle is, that is where you start to look. Start on top, use a kleenex of scrap of "fresh" toilet paper to wipe the area. As soon as it becomes wet, that is the area you need to concentrate on to find what is leaking. Hopefully it is just a hose and it is cheep and easy to fix. If you are not mechanically inclined, find a good friend that know to fix cars, it may cost a steak dinner or a six pack and parts to fix.
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