2002 Chevrolet Impala Heating System Sudden Statrted Getting Warm Time

2002 CHEVROLET IMPALA
190,000 MILES
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MGFLW1960
  • MEMBER
  • 1 POST
My heating system has all of a sudden statrted not getting warm all the time especially if I have it on defrost/floor. I had thermostat changed and system flushed. I have kept the car in great mechanical condition, no other problems.Any ideas????
Dec 20, 2012 at 4:01 PM
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FREEMBA
  • ✓Experienced Mechanic
  • 1,152 POSTS
first of all make sure that the coolant level is correct.

if still no heat, remove the blend door actuator (under dash). turn the "arm" that the actuator fits onto. this will open the heater door. if heat now is available, replace the actuator.

this link will help.

http://www.youtube.com/watch?v=D_GZNbP4mwo
Dec 20, 2012 at 4:36 PM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Before removing anything I would also make sure both heater hoses going into the heater core at the firewall are getting too hot to hold when the engine is warmed up?Also watch if the blend door is operating.
Dec 20, 2012 at 10:29 PM
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