Thermostat change for 2004 [Archive] - Hummer H2 Forum: H2 forums

Thermostat change for 2004

03-01-2004, 10:19 AM
GM has changed the thermostat design for 2004 so the usual thermo with housing replacement won't bolt up. It is now just a thermostat by itself that will drop into place. I'll post part numbers for the new 160 and 180 thermos when I receive them.