2015 GMC Terrain SLT2

Asked by Essa Dec 07, 2022 at 02:17 PM about the 2015 GMC Terrain SLT2 AWD

Question type: Maintenance & Repair

I have a 2015 GMC Terrain SLT2 with no heat. The actuator was replaced as
well as other parts that required the entire dash to be removed. The heat works
sometimes, when its cold and I rev the engine I get hot air. The thermostat was
changed as well, which slightly improved. The AC was recharged and all fluids
are fine. We are stumped

3 Answers
310,565

Gene answered 2 years ago

That is a sure sign of an air pocket. Take it back to where you had the work done and tell them, they had to drain down the cooling system to remove the heater box assembly but they didn’t recheck to make sure everything functioned correctly.

Mark helpful

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