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98 deville heater not blowing, any ideas?

 
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darts

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Since: Sep 02, 2004
Posts: 5



(Msg. 1) Posted: Thu Dec 16, 2004 9:02 pm
Post subject: 98 deville heater not blowing, any ideas?
Archived from groups: alt>autos>cadillac>deville (more info?)

98 Deville heater not blowing, any ideas?
I can't even locate fuses to see if one is no good. any help, greatly
appreciated.
darts RemoveThis @canada.com

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DONALD ROBERTS

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Since: Jun 02, 2004
Posts: 4



(Msg. 2) Posted: Fri Dec 17, 2004 1:24 am
Post subject: Re: 98 deville heater not blowing, any ideas? [Login to view extended thread Info.]
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I just replaced the blower motor on my 1997 Devile . It also didn't
blow any air. I am not sure where the fuse is but you can test the
voltage to the blower. The plug has 3 wires. Black is chassis ground.
Red is 12 v (thru a 50 amp fuse I am told). The other wire is either
grey or black and grey, it carries a variable voltage to control the
speed of the fan motor. On mine it measured from .003 v on LO to .013 v
on Hi.
I understand it is common for the blower motor assembly to go bad. It
is expensive...in the range of $200 to $300 for just the blower
assembly. It is also very difficult to change. It is on the firewall and
the engine is close. I guess they have to loosen the motor mounts and
shift the engine to get room to change it. It would be wise to check out
prices on the part and labor before selecting where you have it done.
Parts store was a lot cheaper than the Dealer.
I hope this helps.

Don

~~God Bless America.....United We Stand~~

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darts

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Since: Sep 02, 2004
Posts: 5



(Msg. 3) Posted: Sat Jan 15, 2005 1:10 pm
Post subject: Re: 98 deville heater not blowing, any ideas? [Login to view extended thread Info.]
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well just a quick update. I took it to Frost motors (GM dealership where I
live), and they replaced the heater blower motor. $800.00 later I have heat
blowing just like before. Ouch!

"Donald Roberts" wrote in message

 > I just replaced the blower motor on my 1997 Devile . It also didn't
 > blow any air. I am not sure where the fuse is but you can test the
 > voltage to the blower. The plug has 3 wires. Black is chassis ground.
 > Red is 12 v (thru a 50 amp fuse I am told). The other wire is either
 > grey or black and grey, it carries a variable voltage to control the
 > speed of the fan motor. On mine it measured from .003 v on LO to .013 v
 > on Hi.
 > I understand it is common for the blower motor assembly to go bad. It
 > is expensive...in the range of $200 to $300 for just the blower
 > assembly. It is also very difficult to change. It is on the firewall and
 > the engine is close. I guess they have to loosen the motor mounts and
 > shift the engine to get room to change it. It would be wise to check out
 > prices on the part and labor before selecting where you have it done.
 > Parts store was a lot cheaper than the Dealer.
 > I hope this helps.
 >
 > Don
 >
 > ~~God Bless America.....United We Stand~~
 >
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DONALD ROBERTS

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Since: Jun 02, 2004
Posts: 4



(Msg. 4) Posted: Wed Jan 19, 2005 6:33 pm
Post subject: Re: 98 deville heater not blowing, any ideas? [Login to view extended thread Info.]
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Thanks for the update. It's nice to how things turn out. I suspected the
blower motor because of the research that i did when mine was bad .Seems
that it is a common problem with the Devilles. I had mine done at a
private garage and I recall the part was just under $300.00 and about
$100.00 to $150.00 labor. They tell me it's a tough job to replace.

Don

~~God Bless America.....United We Stand~~
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dsn142

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Since: Jan 24, 2005
Posts: 1



(Msg. 5) Posted: Mon Jan 24, 2005 11:40 pm
Post subject: Re: 98 deville heater not blowing, any ideas? [Login to view extended thread Info.]
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Try the thermostat first. Then look at the electronic heater controls.
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