heater blows cold air when at idle even when temp is at normal on my 2010 buick lucerne

Asked by Feb 09, 2016 at 08:48 AM about the 2010 Buick Lucerne CXL Premium FWD

Question type: Maintenance & Repair

2 Answers

75,505

Make sure the coolant level is full, and there is coolant in the reservoir at the proper level.

1 of 1 people found this helpful.
75,505

If all is good there with the coolant, then there is a blend door actuator under the dash that controls temperature that may be bad.

1 of 1 people found this helpful.

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