When I turn on the heat it blows cool air only. One time it started working about 20 minutes after turning it on
Thursday, January 12th, 2012 AT 3:53 PM
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.