it could be thermostat stuck open ,low antifreeze, also could be ambiance temperature sensor,or the actual temperature controls on your heat and cool panel in the car.I have also seen a cadi that the heater core would clog up from deposits and would not heat but it did not bother the cars cooling as far as radiator,just would blow cold air .also check all your fuses.
To repair a seat heater on a 2004 Buick LeSabre, disconnect the connector and check for voltage. If there is no voltage, replace the switch. If there is voltage, check for an open circuit.
You need to replace the heater coil !
How do you install a heater core on a 1998 buick lesabre
How do I replace heater core on 98 Buick lesabre
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where are the heater fuses located in a 1995 buick lesabre. the cover for the pasenger fuse box is missing
The heater core of a 2004 Chevy Tahoe is used to provide a source of heat to the cabin. When the heater is turned on, air is blown across the heater core which is constantly supplied with hot coolant from the engine.
no
check your coolant level. if its full, might be a plugged heater core.
location of heater damper on 1995 buick lesabre
my heat won't work
You can find the heater wiring diagram for a 1989 Buick LeSabre in the vehicle's owner's manual. You can also obtain it from various auto part stores.