Heater not blowing warm air

2010 CHEVROLET COLORADO
24,500 MILES
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TMEEKS51
  • MEMBER
  • 1 POST
when I turn on the heat it blows cool air only. One time it started working about 20 minutes after turning it on
Jan 12, 2012 at 7:53 AM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
check to see if both heater hoses are hot when thetruck is warm.if they are thenits an actuator problem. this still should be covered under warranty with the miles and yr you are showing. it could also be the control head.
Jan 12, 2012 at 8:44 AM
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