Question about 1995 Buick Regal
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Posted on Jan 02, 2017
SOURCE: 2000 buick lesabre no heat.
The heat is generated by a heater/small radiator in the dash. That small radiator uses hot coolant from the engine. The temperature is adjusted by varying the amount of hot water flowing thru it with a valve. That valve is commanded by a lever to which a cable coming from the temperature button is fixed - this mechanism no longer works causing the valve to remain shut so you end up with no heat.
You must access the back of the rear console to inspect and replace the failed part: the button, the cable, the lever or the valve itself. Of course you must do that with the engine cold.
The entire procedure is explained in detail - with pictures and diagrams - in this repair manual
Posted on Oct 17, 2010
Sounds like the body control module has gone bad. It has a relay that caries considerable current to all of these accesories and wears out.
It can also be a solder joint on the circuit board where this relay mounts.
Hope this helps, Robert
Posted on May 16, 2012
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