2006 Cadillac Dts Does Heater Only Blows Hot Air Car Motion Even Temp Set 90

2006 CADILLAC DEVILLE DTS
95,600 MILES
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Why does the heater only blows hot air when the car is in motion, even when the temp is set to 90?
Jan 17, 2013 at 5:37 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Have you checked to make sure the coolant is full? Also, is the engine running at a normal operating temp?
Jan 17, 2013 at 6:43 AM
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