tbyrne Posted March 1, 2004 Share Posted March 1, 2004 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. Tom Link to comment Share on other sites More sharing options...
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