: 1994-1999 Deville Blower Motor Replacement



cjk5083
07-24-08, 07:39 PM
Recently i discovered that my blower motor had stopped working and was in need of replacement. I searched around online to see the best way of going at it, and it wasn't good. There is a slight lack of room which is needed to physically pull the motor out. Some people have gotten around this by:
. - unbolting the engine and jacking it up with a floor jack
. - Using a Ratchet strap and forcing the engine forward 1-2"
. - Using a Pry-Bar to pull the engine forward
. - Using brute force and most often cracking the housing of the old and new blower motor
Now i don't know if this has any effect on the performance of the new blower motor assembly, but i found a MUCH easier way of replacing this specific part.

Part One: Remove the old blower motor
1. Remove cross bar connected to Strut towers
2. Mark or label all sparkplug wires and remove them from the coil packs
3. Remove Coil packs and rear sparkplug wires
4. remove the three bolts on the back side of the Blower Motor (Not the 5 around the edges)
5. Remove the large metal plate you just unbolted
6. Remove the 5 surrounding bolts on the perimeter.
7. Pull the old motor out (Becasue you pulled off the large metal bracket in the back, the motor with fan and the seperate housing now come apart for easy extraction)

Part 2: Install new Blower Motor
NOTE: I do not know how if this works for the replacement motors from GM. I bought a used motor off of eBay. The only difference i know of between the original part and the new replacement part is that the new part only uses 3 bolts to hold the Motor in place, not the original 5
1. Unbolt the 3 bolts on the back of the new Blower Motor and remove the large metal plate
2. disassemble the Blower Motor into 3 parts
. -Fan/motor
. -Housing
. -Backing plate (Large metal plate which was just removed)
3. Insert fan first, fallowed by the housing
4. Insert bolts through the backing plate, through the housing, into the fan/motor assembly and everything will be back 100% Back together
5. Tighten down the 5 bolts on the housing of the Motor
6. Reattach Plug wires and coil packs
7. Reattach strut support
8. Miller Time :cheers:

NOTE: This is a good time to replace your spark Plugs. Everything is all clear in the back and makes access to the rear sparkplugs 1000x easier!


Pics soon...

urbanski
07-24-08, 07:47 PM
thanks for the tips :)

bradmo
10-25-09, 10:50 PM
This is GREAT info!!! Works very well!
Additional tip:
If using a one-piece replacement motor - they are VERY fragile. The printed circuit board inside will break if almost ANY pressure is applied while installing!
You may find it necessary to slightly trim the hole in the firewall to ease the installation process. Less that a 1/4" in the right place(s) will give you all the room you need.
Just be sure to apply no pressure trying to install the new motor or you will be buying another one!

nekobarnes
12-08-09, 11:08 AM
I found that an easier way of installing the blower and getting around the lack of room is by cutting about of half inch of plastic from the back end of the blower where you bolt the screws into the hole. Just be careful not to get too close to the holes where the screws need to go thru. After toying around with the idea of removing the motor mounts and rocking the motor in order to get clearance i realized at that time i did not have the tools, so i got my box cutter and started to trim away until the blower slid into place, this took me about 15 minutes. This is my best advice to others who dont have the tools or patience to rock the motor over.

turbojimmy
01-19-10, 02:40 PM
I don't know why my 1995 Deville Concours is different, but here is what I had to do:

- Remove the strut tower brace
- Cut the rubber/plastic blower box insulation where it says "CUT HERE". Open it to expose the metal heater box and the shroud affixed to the blower motor housing (see the pic below).
- Unclip the big wiring harness that runs along the back of the engine (technically the right side of the engine) and lift it up and over the engine lift attachment point to get it out of your way.
- Using a 9/32" socket, remove the 4 bolts around the perimeter of the motor housing.
- Remove the 5th 9/32" bolt that affixes the plastic shroud to the blower housing.
- Tilt the motor and lift the squirrel cage up through the access hole in the blower box

There was no need for me to remove the coil packs or move the engine out of the way.

Pics:

http://www.turbojimmy.com/concours_blower_housing.jpg

http://www.turbojimmy.com/concours_blower.jpg

bonehead79
02-07-10, 02:38 PM
When it comes to installing a new blower motor in a 1994-99 Deville its a piece of cake. All you have to do is remove the coil packs off the back of the motor don't have to remove the plug wires just the wires to the packs,move it out of the way then,next remove the two motor mounts bolts (dog bones) and swing them up then all you have to do is loose up the front engine cradle bolts you DONT have to take them all the way out then takea nylon strap or cargo strap and pull the motor forward you will have plenty of room its only about a 25 minute job if your good and have air tools and this way you dont have to hack you car up like ive seen some

jgajito
03-21-10, 03:18 AM
Recently i discovered that my blower motor had stopped working and was in need of replacement. I searched around online to see the best way of going at it, and it wasn't good. There is a slight lack of room which is needed to physically pull the motor out. Some people have gotten around this by:
. - unbolting the engine and jacking it up with a floor jack
. - Using a Ratchet strap and forcing the engine forward 1-2"
. - Using a Pry-Bar to pull the engine forward
. - Using brute force and most often cracking the housing of the old and new blower motor
Now i don't know if this has any effect on the performance of the new blower motor assembly, but i found a MUCH easier way of replacing this specific part.

Part One: Remove the old blower motor
1. Remove cross bar connected to Strut towers
2. Mark or label all sparkplug wires and remove them from the coil packs
3. Remove Coil packs and rear sparkplug wires
4. remove the three bolts on the back side of the Blower Motor (Not the 5 around the edges)
5. Remove the large metal plate you just unbolted
6. Remove the 5 surrounding bolts on the perimeter.
7. Pull the old motor out (Becasue you pulled off the large metal bracket in the back, the motor with fan and the seperate housing now come apart for easy extraction)

Part 2: Install new Blower Motor
NOTE: I do not know how if this works for the replacement motors from GM. I bought a used motor off of eBay. The only difference i know of between the original part and the new replacement part is that the new part only uses 3 bolts to hold the Motor in place, not the original 5
1. Unbolt the 3 bolts on the back of the new Blower Motor and remove the large metal plate
2. disassemble the Blower Motor into 3 parts
. -Fan/motor
. -Housing
. -Backing plate (Large metal plate which was just removed)
3. Insert fan first, fallowed by the housing
4. Insert bolts through the backing plate, through the housing, into the fan/motor assembly and everything will be back 100% Back together
5. Tighten down the 5 bolts on the housing of the Motor
6. Reattach Plug wires and coil packs
7. Reattach strut support
8. Miller Time :cheers:

NOTE: This is a good time to replace your spark Plugs. Everything is all clear in the back and makes access to the rear sparkplugs 1000x easier!


Pics soon...

Did you ever get around to those photos?

mart88
03-31-10, 05:23 AM
Thanks for the tips! :)

fosterdes64
06-18-10, 07:31 AM
I Just bought a 1996 Concours.The fan just stopped blowing like I turned it off on purpose.How can I test it to see if I need the relay,fan motor,?? Any help greatly appreciated!

nekobarnes
06-24-10, 06:10 PM
YOU DO NOT NEED TO DROP THE CRADLE! Simply remove the 4 bolts from the back of the revised blower and it will slide right in provided you moved the harness. Once you have it in place simply install the 4 bolts that you removed previously and then bolt it up to the car and your done. It took me awhile to figure this out but once I had I had it installed in my car in under 20 minutes.

nekobarnes
06-25-10, 07:53 AM
Ok, here is a photo example of what I mean..remove the 4 bolts from the back of the blower and with a little care and positioning it will go in without destroying the unit. Reassemble after getting it in.


http://img822.imageshack.us/img822/2449/img00107.jpg (http://img822.imageshack.us/i/img00107.jpg/) Uploaded with ImageShack.us (http://imageshack.us)

cycotom
09-22-10, 12:59 AM
Just wanted to thank the other posters here for the step by step instructions. I recently replaced my blower. I guess this would explain why it wasn't blowing:
http://img.photobucket.com/albums/v233/cycotom/photo.jpg

turbojimmy
09-22-10, 06:02 PM
I don't know why my 1995 Deville Concours is different, but here is what I had to do:

- Remove the strut tower brace
- Cut the rubber/plastic blower box insulation where it says "CUT HERE". Open it to expose the metal heater box and the shroud affixed to the blower motor housing (see the pic below).
- Unclip the big wiring harness that runs along the back of the engine (technically the right side of the engine) and lift it up and over the engine lift attachment point to get it out of your way.
- Using a 9/32" socket, remove the 4 bolts around the perimeter of the motor housing.
- Remove the 5th 9/32" bolt that affixes the plastic shroud to the blower housing.
- Tilt the motor and lift the squirrel cage up through the access hole in the blower box

There was no need for me to remove the coil packs or move the engine out of the way.

Pics:

http://turbojimmy.4t.com/concours_blower_housing.jpg

http://turbojimmy.4t.com/concours_blower.jpg

Fixed pics.

wkearns
12-10-10, 09:34 PM
Ok, here is a photo example of what I mean..remove the 4 bolts from the back of the blower and with a little care and positioning it will go in without destroying the unit. Reassemble after getting it in.


http://img822.imageshack.us/img822/2449/img00107.jpg (http://img822.imageshack.us/i/img00107.jpg/) Uploaded with ImageShack.us (http://imageshack.us)

Hi, I'm trying to repeat your process with my 97 deville. I have the identical blower to yours. Did you pull off the fan first? I don't seem to have enough clearance to get the fan/motor combination in although I've trimmed around the hole to make it larger. If I remove the fan I can get the motor & inertial plate in ok, but I'm left with how to secure the nut that holds the fan blade assembly on.
Thanks!

Chevyman1978
02-17-11, 04:28 PM
First off thanks to all that posted in here on this subject. I was glad to have some knowledge before tearing into this project. I have ran into somewhat of an unusual problem I guess. I replaced the blower motor on a 1999 Deville and put the whole thing back together again only to hear a disturbing noise.. the fan was making contact within it's housing. I was not quick enough to shut it down as the squirrel cage flew apart. After disassembling everything (again) I found what I thought I had heard. The new fan is slightly bigger in diameter than the original and it made contact on the wall on the passenger side of the fan opening. Has anyone ran into this? If so, how did you fix it? I have a new motor and fan, but don't wish the same thing to happen...(it is a very time consuming job).

SwampTider
01-14-12, 07:22 PM
Did you remove the coil packs or is that all you did? Thx

jlord9485
01-29-12, 04:04 PM
I wanted to let you all know, by luck i found an extremely easy way to do all of this. Because of the age of the car, the plastic covering on the firewall had started to crack and chip away around the blower motor housing. I removed all of the cracked and chipped pieces because they were falling on the exhaust manifold and melting, which destroyed my o2 sensor. Once i removed the 3 screws that hold the blower in place, i noticed the lack of room problem. On the top of the housing there is a plastic access piece held in by 1 7mm bolt. once the plastic access piece was removed, the blower came out with almost no resistance. Basically, remove the 2 or 3 bolts that hold the plastic cover too the firewall around the blower motor. then remove the plastic access piece. Pictures are posted below.

The first picture is with the plastic access piece in place. The two bolts on the firewall are what hold the plastic covering of the whole housing on. Mine had cracked apart so I removed all of the cracked plastic.

The second picture is the actual piece i am talking about in my hand. The third picture is the blower motor hole with the access piece removed.

SteveMeyer
03-03-12, 09:38 PM
Regarding the rubber/plastic cover that is screwed to the firewall, and apparently surrounds the blower motor: I've always take my 94 Seville to the Cadillac dealer, but let my dad's mechanic take a shot at replacing a dead blower motor; said he could save me a boat load of money. Well, he fixed it, and I assume he put a new blower in, but he didn't save me any money. That was six months ago. Today, I put a new battery in myself, and noticed what appears to be the blower motor housing on the firewall is all broken up into dozens of pieces that someone appears to have tried to glue back together, and sprayed with black paint. I reach in to touch it and it crumbled. This appears to be made of rubber, and must be the cover mentioned in the earlier posts to this thread. I noticed today that I can smell engine oil in the car, and I am now wondering what this cover is actually. I'm thinking it is ligitimate duct work and it purpose is to channel air from the windshiled cowelling to the blower. I'm thinking that I might now be sucking air out of the engine compartment through the busted up rubber blower cover. What is this cover? Do I need it? Should I replace it? Can I replace it? Is the part even available?

Thanks.

vincentm
08-04-12, 03:59 PM
So it's a success after all the history of AC problems from when i first bought this vehicle i (hopefully) have fully functioning brand new AC. from the compressor, to accumulator, orifice tube to high and low pressure switches, now to the damn blower motor.

So to recap, here's how the motor was replaced.

First the old one that needed to come out, see that little bastard staring you down? saying "haha good luck getting me out of here" Well, you little F***er, you're being evicted!

http://i48.tinypic.com/28ldle.jpg

Start by disconnecting the negative battery cable:

http://i49.tinypic.com/faouie.jpg

Then the cross tower brace is outta there, see ya!

http://i50.tinypic.com/1f7a0g.jpg

then the coil pack, 2 10mm bolts up front, 2 in the rear, 4 electrical connections on the left and right side of it

http://i49.tinypic.com/jigcvq.jpg

http://i50.tinypic.com/k357pk.jpg

http://i45.tinypic.com/oiavl2.jpg

http://i46.tinypic.com/2mezka9.jpg

http://i49.tinypic.com/17uz5i.jpg


And she's off:
http://i46.tinypic.com/2v157qb.jpg


Next up is the vacuum solenoid/switches, 10mm bolt
http://i46.tinypic.com/2nbsisg.jpg

Then the old blower motor which comes off in 3 pieces, observe.

First the heat shield, three 8mm bolts:

http://i50.tinypic.com/15pjtd1.jpg



Then the outside five bolts holding it to the firewall. The bottom bolt is a pain in the ass, take a swig of beer and breathe deeply, gather your patience, if you get frustrated, calm down and walk away.



http://i47.tinypic.com/33ky6w3.jpg

And that bastard is out:

http://i49.tinypic.com/28smy5z.jpg


Now to get the new one in the right camshaft cover has to come off no ifs and or buts, the good thing though is that i didn't have to disconnect the front torque strut to rock the engine forward, i used this for the rear 4 10mm bolts

http://i45.tinypic.com/j64u9u.jpg

And the new one installed, be careful in getting it in there, take your time and breath slowly, at this point if you have a buzz from the beer swigging, stop and wait for it to go away.

http://i45.tinypic.com/nd8kzb.jpg

Bogdan
11-05-14, 05:07 AM
I've replaced myself the blower motor on my deville 95 thanks to the knowledge posted here. I used the method given by jlord9485 and was the simplest and the fastest. That way you can fit the whole blower in with no problem regardless if is the new [3 bolts] or the old/original model [5bolt]. No issues with rubber cover which indeed crumbled. Old rubber will crumble and fall on exhaust and melt with a heavy rubber smell but this will not alter blower motor duct integrity. What can really alter is if you brake the plastic access part cover that's under the rubber cover and which you need to unscrew [1 bolt only] to have that room access as in the picture posted by jlord9485. Also when you replace that plastic access cover back pay attention as it have a snug fit position into the fire wall metal margin. Don't tight to much the 1 bolt plastic cover screw as you are tightening it on plastic...

If the replacing part is the 5 bolt blower motor one which doesn't have the heat shield protection as the new one has I advise to buy a thermo adhesive backed heat barrier which will cover and protect not only the blower but also the surrounding areas. I've used a 12x12 inches very convenient priced one find and purchased from Autozone for $11-Therma Tec.
260586260594

For the ones who will take apart to 3 pieces the original blower for the convenience to fit in that tight space [without using jlord9485 method] and reassemble it after you need to be aware that putting it together in that tight space it makes it very difficult to have it back solid. There are 3 contact pins that you'll find easy to get into their seat but they really need to go all the way which is really a pain...you might think that you have them solid fit but not and the 3 bolts on the metal plate will not pull them into a solid fit either. If that happens the blower once installed will eventually decenter and break its cage and even damage the rotor. Happened to me but I was fortunate to have the cage only broken and have the spare cage taken from the deceased blower. Second time I've replaced the blower as a one solid piece using jlord9485 method. To be sure it is a solid fit you'll need to put the cage-rotor part and the 3 contact pins cover together at least before installation and because of that when you don't use jlord9485 will may need more room so the engine tilt might give you now this leverage.

Here is the blower rotor part and the 3 contact pins that need to get into the rotor contact seat. Pins will need to go all the way till you fill that pins cover is centered and solid stable into the 3 bolt holes position.
260570

Here is the metal plate that will complete the fixed position in between the rotor, pin cover and the metal plate through the 3 bolts screws. If you did the solid fit part as described in the first picture you can leave and add the metal plate last so you can can have more space to screw the blower to the fire wall through the 5 bolts first. For this screw the 3 bolts directly into the cover so you assure rotor and cover stay well together then fix the blower to the fire wall, take out then the 3 bolts and have them back again with metal plate. You're done.

260578

abrag10
11-19-14, 06:35 PM
I'm having trouble removing my blower motor on my '95 Deville with 4.9 liter engine. I'm wondering how I can drop the engine to make more room. I've looked and looked and can't find anywhere to place a jack to lower it.

mavric240
11-21-14, 05:18 PM
Four Seasons has a blower motor 35121 that comes in two pieces. Using this design was a piece of cake to replace. I've seen the same part number using a one piece design so you will need to check what's in the box. The design I got was a motor with a pigtail and a aluminum flange with the electronics mounted on it. After removing the old one as indicated above install the new motor assembly in the hole, Slip the flange over the pigtail and motor. Using the supplied nuts attach the flange to the motor and then snap in the pigtail to the module on the flange. Next proceed to bolt up the new motor and reverse the removal directions to complete the install.

jaxwithanx
12-10-14, 03:55 PM
Four Seasons has a blower motor 35121

Did you order your Four Seasons blower from anywhere specific. I can find them much cheaper online but your comment about the same part number also being the one piece design has me gun shy to order through eBay or Amazon considering there is no real way to get those types of places to check the part first before ordering.