I have a 2001 Safari passanger Van. Why is it the the heat works great while moving , but when at red light ect. Stopped the blower is blowing cold air., I start mobing again the air is hot again..
40

Asked by BettyJT Feb 28, 2015 at 01:35 PM about the 2001 GMC Safari

Question type: Maintenance & Repair

4 Answers
144,795

T_S_T answered 9 years ago

Check the actuator blend door,may be bad actuator,or could also be a vacume leak at the blower box.

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144,795

T_S_T answered 9 years ago

Under dash ,passenger side,on the blower box,google it,there are pictures, of it there.

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