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89 deville 4.5L

  
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digital67

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Since: Jun 29, 2005
Posts: 1



(Msg. 1) Posted: Wed Jun 29, 2005 3:02 pm
Post subject: 89 deville 4.5L
Archived from groups: alt>autos>cadillac>deville (more info?)
my digiatl display on my gas guage and on my heater control have a c in
it,and now my cooling fans are running and my heater fan is on all by it
self...what can be going on?

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Shakes73




Joined: Jun 17, 2005
Posts: 99



(Msg. 2) Posted: Wed Jun 29, 2005 6:53 pm
Post subject: Re: 89 deville 4.5L [Login to view extended thread Info.]
So what you are saying is that everything works right just your blower motor stays on when it's not suppose to?? If so try replacing the module under the hood,it mounts on the heater/A/C box just above the blower motor it has 3 or 4 5/16 screws in it.Big purple wire going to it with other wires.Can't miss it.Let me know

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seak

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Since: Jul 01, 2005
Posts: 8



(Msg. 3) Posted: Mon Jul 11, 2005 6:16 pm
Post subject: Re: 89 deville 4.5L [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Had same problem on my '89 wound up being the climate control
module.....from gm module is $170 from advance auto parts it is $116.88
Advance auto parts item # is 3881326 hope that helps
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seak

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Since: Jul 01, 2005
Posts: 8



(Msg. 4) Posted: Fri Aug 05, 2005 4:15 pm
Post subject: Re: 89 deville 4.5L [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
I wound up changing out the climate control module and was still having
problems with mine. My display had a "d" in it...the problem wound up
being the body control computer located behind the glove box. I understand
this is a common problem most part stores stock reman units for this for
under $100 ....takes about 20 minuites to change. this also solved some
other code issues I was having
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