I just changed my water pump about 2 weeks ago. Everything was fine. Now my gmc 2004 yukon is getting hot again but not leaking anything. Why?

Asked by Sergio Nov 17, 2014 at 10:51 PM about the 2004 GMC Yukon SLT

Question type: General

1 Answer
30,160

mikeatpriestlake answered 9 years ago

assuming the fluid levels are ok, it is possible that you need a thermostat. also, if it overheated bad enough, you could have a bad head gasket, but you would probably notice loss of fluid if that were true. If you are losing fluid or suspect a head gasket, do a combustion leak test. napa kit is about 40 bucks and there are good youtube vids on the subject.

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