The water pump should be along the serpentine belt. Refer to how to change a driveline belt at this site. The water pump should be located to the right(driver side) of the vehicle and it should be at the highest position on that side.
Buy a kit at Wal-Mart or auto parts comes with instructions
repair timing chain on 2000 chevy tracker
where its located the oil gage in a 2000 Chevy tracker mortor 2.0
ask yourself this question is your tracker over heating? if you said yes you may need water pump, thermostat, and engine coolant :)
Below-
on the dash under directional
14 GALLONS
4 door=17 gal
Turn signal lever.
In the dash under the glove box
4 quarts 4 quarts
.o44 and some are .043.