My 1995 buick lesabre custom heater control works when it wants to.It will
work but sometimes when you push the buttons to turn on the heat or a/c I
hear a clicking sound coming from somewhere behind the glove box and the
lights will flicker and then come on. The system will work for a while then
may turn off or blow through the vents. Do I need to replace the control
programmer or the control panel?
I'd guess the Custom has manual, slider controls. And I'd guess the
control panel is NOT the culprit. Have you looked behind glove box to see
if there's a relay back there? When one malfunctions, it sometimes has to
hunt for enough voltage to actuate the load-circuit and its points vibrate &
click. Describe symptoms to AutoZone & ask them to tell you if there is one
under dash and where it's located; if there is one behind glove box, I'd
try replacing it first. One brand they carry, Bosch, should be quality
mdse. & should cost around $10-$15. HTH, s
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