Question about 1986 Cadillac Seville
When i turn my car on the dash board "messege center" goes out right away. when it comes back on my ac unit comes back on as well. then the dash board goes out again, and it does not come back on.
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Posted on Jan 02, 2017
SOURCE: Dash Control Unit Replacement
Before tearing out the AC control, does the temp knob feel loose or wobble alot more then the fan knob? If so pull the temp knob straight off. Look at the small nut around the shaft the knob came off of. Its common for them to come loose. Just tighten it up some and reinstall the knob. Your temp will work normally now.
This fix is for the manual system not the auto ac system.
Posted on Apr 15, 2009
the problem is with the blend door it controls the blend of hot and cold air. there is a small electrical motor that can go bad or they can hang up
you will probally have to take some covers off to find out whats going on
Posted on May 14, 2009
i have 2000 cadillac deville runs really good it has a po340 engine code runs good b when i come to a complete stop the engine idles up and down only at a complete stop what do i need to do
Posted on Oct 28, 2009
You have the same problem I did. It is a Bad Central Power Supply which is located above your Gas Pedal. It is a silver box 4 in. by 6 in.. They are not made anymore so you have to go to a repair shop and they will find you one on thier computer. Or you may find one at a Junkyard. The new one will cost $300 the junkyard from $125 to $175. I would get the new one because its Plug and Play and Labor charge is Minimal.
Posted on Jul 10, 2010
This is a Bad Central Power Supply . It is located above ur gas pedal. It looks like a square silver box.They arent made anymore so you can find one at a Junkyard , Dealer or have it Rebuilt.
Posted on Sep 26, 2010
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