How to change a thermostat on hummer 3 2007 - 2007 Hummer H3

that is the easiest

is the car also over heating after a while? If so I would suggest checking the thermostat

Try Changing the thermostat.

Hi, Follow the top rad hose to the engine. You will have 2-3 screws to undo and under that is the thermostat. replace if needed.
You will have to drain some rad fluid because you will have a mess to clean up if you don't. The petcock is at bottom of rad. Good luck.

The thermostat.is on the left side of the engine under the back of the alternator. You have to go through the wheel well to get to it. Stupid place to put it. It's not easy to get to.

hi. change the thermostat. if u want to do it yourself and don't know how, get back

check antifreeze level. fill if necessary. if level is ok, you may need a new thermostat.

Follow the top radiator hose to the engine block. The thermostat sits under the housing that the radiator hose connects to. There should three bolts holding down the housing and it's easy to remove.

Remove the thermostat housing bolts. Remove the thermostat housing from the engine block. Clean and inpesct the thermostat housing. Clean and inspect the sealing surfece of the engine block