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

Average mileage: 130,212 (14,579–230,000)
11 model years affected: 1993, 1995, 1997, 1998, more1999, 2000, 2001, 2002, 2003, 2004, 2005
42 people reported this problem
28 people shared 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 LeSabre51,000
Heat only blows cold air (or slightly warm air) after completely warming engine. Blower fan failed over the summer also so I replaced that, replaced thermostat, flushed cooling system, checked actuator door (ok). Still have cold air only. Any additional things I could try?
2002 Buick LeSabre171,960
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.
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 LeSabre63,000
Heater blows cold air. Have not found a solution.
1998 Buick LeSabre114,264
1998 Buick leasbre Heating not working,blowing cold air,
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 LeSabre102,500
Defroster only blows cold air with heat set. Took to dealer and flushed cooling system corrected problem.
2001 Buick LeSabre186,987
The heat blows out cold air when its on hot defrost.
2002 Buick LeSabre160,400
Heater fan doesn't come on .Then I hit a hole in the road and comes on
1999 Buick LeSabre113,000
Just replaced a turn signal relay and the battery, and now after the battery change, the heater only blows cold air. I am wondering if changing the battery caused a sensor or electrical issue possibly.
2003 Buick LeSabre125,000
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.
The blower works but there is no heat coming out.
heater filed 2yrs ago. No heat and no air. A cold winter and a very sticky summer
Blower motor replaced works great now no heat what could be cause
All of a sudden I lost heat and defroster on my 2003 buick lesabre. If I bring the motor to 2500 rpms I have some heat. What's the problem?
turn on heat .heater seems tio make noise- like its working -no heat inside car
1997 Buick LeSabre131,000
Defrost blows cool...problem started suddenly. Haven't diagnosed the situation yet.
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