GM heater not working
Thanks for the membership. I have read this forum for some time and found some valuable information.
The heater in my 02 GM does not put out warm air. Last winter I noticed when I went into the flr/def mode, the air to the floor cooled considerably, but the heater alone worked fine. This winter, there is no warm air. Water in the radiator reservoir is fine, and the car runs at normal temperature. Fan and a/c work fine - just no heat.
The car has climate control, but the heat does not work on either automatic or manual. Any ideas?