Heater blows only cool air...even w/ defroster on on Buick LeSabre

Average mileage: 131,570 (14,579–230,000)
10 model years affected: 1993, 1995, 1997, 1998, more2000, 2001, 2002, 2003, 2004, 2005
30 people reported this problem
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problem details
I'll turn up the temp on the dual control to get heat, and/or the defroster to blow warmer air. All I get is cool air that makes for an uncomfortable ride and slower defrost. I did replace the blower motor in the summer, could this have caused the problem by not hooking something up correctly?
2002 Buick LeSabre 171,960 mi,
Only the cold/cool air comes out of my unit. I have checked the control panel (removed and opened) to ensure the device was moving properly from side to side (cold to hot), it does. I then checked the battery, making sure the reset, from having my mass air flow sensor replaced didn't cause a misread to the electrical system. Today, I find it is the accualtor door. Part $91.06 plus tax, Nash Cheverolt, and $117.00 for labor. I did it myself, it was approximately 10 screws and 30 mins (or so) of laying uncomfortabley on my back.- no jokes, please. Heat works like a champ and the Buick gets to live another day in my garage.
1998 Buick LeSabre 114,264 mi,
1998 Buick leasbre Heating not working,blowing cold air,
my car blows out warm and cold air after 20 minute I change the thermostat check the coolant levels would it be the climate control unit are the temperature control unit
2002 Buick LeSabre 63,000 mi,
Heater blows cold air. Have not found a solution.
No heat only blows out cool or cold air.
Heater is not getting hot. The heater comes on but does not get hot. What is wrong?
My heat is blowing cold air in my 2002 Buick lesaber
2002 Buick LeSabre 102,500 mi,
Defroster only blows cold air with heat set. Took to dealer and flushed cooling system corrected problem.
2002 Buick LeSabre 160,400 mi,
Heater fan doesn't come on .Then I hit a hole in the road and comes on
2001 Buick LeSabre 186,987 mi,
The heat blows out cold air when its on hot defrost.
2003 Buick LeSabre 125,000 mi,
Had the same problem. Mechanic flushed out the entire engine and cleaned out the gunk that had built up. Now I have heat after nearly 2 winters without it. Be sure to have them check all hoses and connectors after the flush out; I had a leak within 5 days from 2 elbow parts (plastic) that disintegrated because they had pretty much been held together by the gunk inside.
heater filed 2yrs ago. No heat and no air. A cold winter and a very sticky summer
2000 Buick LeSabre 119,876 mi,
No heat at all not even with defrost only cold air
only blows cold air ...heater core inlet hose hot...return hose cold...3.8 liter