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Heat only when driving

Sam53228

By Sam53228
January 25, 2021 in Ask A GM Technician

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Sam53228

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Sam53228

Posted January 25, 2021

Posted January 25, 2021

I have a 2006 pontiac torrent that we changed the thermostat and now only have heat when we drive. When it is idling it blows cold air. We believe we have a head gasket issue, could these 2 be related?

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