first drain the coolant at the bottom drivers side rad follow the top rad hose on drivers side to the motor the housing it is clamped to is the thermostat housing remove the air intake tube & throttle body two bolts hold the housing in place remove them slid the hose and housing out when installing be sure the thermostat is seated or you will break the housing
Where
one issue could be that you need to change your thermostat
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It doesn't matter. A thermostat is a non-serviceable item. If it is bad, you replace it. That probably isn't your problem though.
The thermostat is located in the housing where the top radiator hose connects to the engine. You will have to disconnect the hose and unbolt the housing to get to the thermostat.
The 2002 Bonneville with a 3.8l engine has the thermostat in the top radiator hose inlet. A different engine any use a different location.
the 2002 Pontiac Montana came with a 3.4L engine.
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Passenger side, open the door it should be on the right side
It is located directly under the throttel body.AnswerWhere is the thermostat on a 2002 Pontiac Grand Am?" Answerwhere is the thermostat on a 2000 Pontiac grand am Instructions on how to change a thermo..Hello, this page has instructions on how to install a new thermostat on a 99+ Grand Am. Also, not listed on the page as an instruction but something I did when changing the thermostat was to take off the throttle body which made getting to the inlet manifold bolts much easier. The bottom bolt was particulary hard to get too, the top bolt was not too bad. Good Luck. http://www.grandamgt.com/thermostat-pfyc.HTML
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