Battery was disconnected and when reconnected the ac control won't work. The fan switch works sometimes. Temp control doesn't change. It is stuck on heat. Can't get cold air to blow at all. The automatic switch does nothing, and clutch for ac comes on but ac only blows heat. Worked fine and blew really cold yesterday.
See this steps and fix it. God bless you
Start the car and turn the air conditioning on. Allow the
engine to run a few minutes so the air can cool. Check to make sure you
have the proper buttons selected. This simple step may uncover the root
of the problem.
SOURCE: 1997 buick lesabre HEATER PROBLEMS The fan
This could be several things. First I would check that the thermostat is not stuck open. This will condition will make the car run cold when it is cold outside.
If this is not the case........and I'm assuming you've already checked that the antifreeze is full, make sure that the heater valve is working. If it is frozen in place then it won't move and won't allow the warm water to circulate through the heater core.
I'm basing my answers on a standard Lesabre. Yours may not have the standard climate control.
SOURCE: 1998 buick century heat control won't switch
these are common for knobs breaking, pull knob off and look at the back see if its broken, pull a good one off and compare,il bet you its broken, so it doesnt spin the shaft it feels like it is but it doesnt, hope this helps,
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The ac controls are not manual, It is an automatic climate control system.
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