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Is you Geo Tracker overheating or the temperature is running almost hot then you need to change you thermostat
On a 1996 Chevrolet Tracker, the thermostat is typically located near the engine, specifically at the point where the upper radiator hose connects to the engine block. To access it, you may need to remove the upper radiator hose and the thermostat housing. It's advisable to consult the vehicle's repair manual for detailed instructions and diagrams for accurate identification and replacement.
5w30
On a 2002 Chevrolet Tracker, the coolant temperature sensor is typically located near the thermostat housing, which is usually at the front of the engine. It may be found on the cylinder head or intake manifold, depending on the engine configuration. To access it, you may need to remove some components, so refer to the service manual for detailed instructions.
Bad radiator, gaskets, water pump, thermostat
http://www.oempartsguys.com/blog/how-to-find-your-replacement-sun-visor/
Yes it is what General Motors considers the replacement.
Recommended is 5W30
In your local junk yard or possibly on ebay.
On a 1993 Geo Tracker, the coolant temperature sensor is typically located near the thermostat housing on the engine block. It is usually situated on the cylinder head or intake manifold, depending on the engine configuration. To access it, you may need to remove any obstructing components, such as the air intake or engine covers. Always ensure the engine is cool before attempting to locate or replace the sensor.
ask yourself this question is your tracker over heating? if you said yes you may need water pump, thermostat, and engine coolant :)
on the hrottle body