2006 Chev Impl heating

2006 CHEVROLET IMPALA
71,000 MILES • 6 CYL • FWD • AUTOMATIC
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CH7100
  • MEMBER
  • 1 POST
Car does not heat but only when driving for a long period of time., but when i stop or sit at a light i get cold air.

Thanks
Jan 21, 2011 at 7:19 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Make sure the coolant is full. Check to make sure the engine is running at a normal operating temp. If the all checks good, start the engine, let it warm up with the heater on high, and feel both heater core hoses. Both should be hot. If they are, check and repair blend air door. If only one gets hot, try flushing the heater core.
Apr 4, 2011 at 11:26 AM
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