Hummer H3 Thermostat Replacement

Hummer H3 Thermostat Replacement

How to replace a thermostat on an H3 by removing the alternator

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Joe bob says:

I did this by removing the front tire way. My advice is to put the radiator hose on the new thermostat first making sure the holes on the thermostat line up without twisting the hose. I had my lower hose already on the bottom of the radiator but not tightened. Gotta tweak it.  I tried putting the thermostat on first then trying to move that heavy duty hose clamp into place. Impossible.

Mario Feliciano says:

He took the long route to removing the thermostat.

Steve says:

To much work! Trust me go in through the fenderwell. 20 min in and out.

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