Question about GMC Jimmy

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2001 Jimmy, ran a little hot and steam was coming out of the window defrost vents, changed the thermostat now steam is really comming out of the window defrost vents. What do we need to do?

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You heater core is leaking causing steam to come out of the interior vents. This is quite a process to replace a heater core in one of these cars. The entire dash needs to be removed. The core itself is located under the middle of the dash towards the top. If you do this job yourself, take your time and allow a full weekend to do if you've never done one before.

Posted on Aug 16, 2008

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