Originally Posted by garimus

i have a 99 gmc suburban k15004wd that has no passenger compartment heat. The airflow director works great. air blows on floor/defrost/vents with no problem. The problem I have is that it never gets HOT. The A/C works great. I just need heat. Is there a seperate temp control "door" or acttuator that may be stuck? The heat doesn't wrk in the back either, but they "broke" about 8 months apart. front heat worked fine for a while, but now i get nothing but cold air. Heater hoses seem to indicate water flow all the way to firewall as they get hot, so i don't think its a water flow issue... but..

Any ideas? I came out late from work last night and my 5 year old was snuggled up to his mom because they were sol cold waiting on me.! Help!