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6.5 Blower motor

matuva

matuva

Tropical 6.5er
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Location
New Caledonia. An island in south west pacific, cl
My AC/heat blower motor is squealing and it make me mad :mad5: .

Anybody allready parte out a blower motor on a 1994 Blazer or similar, and can share a "how to"?

I've been looking for diagrams (no luck) and at the assy itself, but before I try to open this plastic assy and brake something, may be someone knows some tips & tricks which can make things easy?

Thanks in advance.
 
if it's the same as my 96 the plastic is just a cover and it's a standard chevy blower motor under it. pull out the glove box and IIRC 3 screws on the motor. kinda tight space but doable.
 
ak, this a diagram I found:

air circuit.jpg

I believe part 17 is just a cover, and 13 is the blower motor I want to reach.
Does it look like yours? Seems I can reach it from the side, not from above?

I realize that what I see from outside seems to be a cover only, not a screwed part of the blower system...

Night has come at the moment, I will look closer tomorrow morning.
 
Part 17 destroyed in my truck, when it look like I would have to drop the whole thing to get it out, out came the razor knife and dikes, still needed a universal for the socket wrench to get the blower out.
 
The computer tray has to come out to remove the #17 cover without cutting it off. It lifts up and over some lugs on top, but, the tray holds it down. Then you have to rotate the blower motor flange to get it to clear the bottom of the dash on the way out. Check the HVAC connectors for signs of melting and X2 on adding an extra ground to the motor.

I recommend the expensive GM part as the knock off Chinese junk lacks a twist in the armature causing the motor to be nosier and click when running vs. the better GM part. $109 for GM part and $25 for Autozone - what is a quiet motor worth? Yes, You can hear the cheap motor it over my loud straight through muffler exhaust...
 
I only use AC Delco or GM parts for most stuff in general. Unless there is something I know to be better in an aftermarket.

Most parts are to much of a pain to change to justify saving the money. Even if it does have a lifetime guarantee. Especially if it has a lifetime guarantee. By the 3rd time your changing the part the guarantee is really starting to irritate you
 
OK, I finally decide to go further.

I took some tools, a flat scredriver, ratchet, torch..

- first pull out theglove box to access ECM
- disconnect ECM harness, pull the ECM
- once you access the ECM tray, pull the 2 screws on top, just loosen the 2 others under, pull the tray
IMG_20130108_131305.jpg

Now you can see this cover #17, disconnect wires, twist, wiggle the cover and take it out


IMG_20130108_132030.jpgIMG_20130108_132018.jpgIMG_20130108_132208.jpg

Once you have it out, you have now access to the blower motor. 5 screws later, it will be out. You can swap a new one
or just spray WD40 and GM grease on the shaft, what I did, and you have a like new silent blower motor :D :D

Put back all stuff, step by step. Just don't forget to reconnect the wires on the blower before putting the ECM tray, it's a looot easier. Don't ask me how I know
 
What I was told about electric motors was never to put any lube on them, heat build up and sparks flying from the brushes along with the vapor build up sounds like a bad combo
 
Excellent pics!! This is something I need to do as I've got a little birdy trapped under that cover that needs to be released. So far I only hear it when the fan is on low speed.

I've delayed doing anything because of previous reports I've heard about the difficulty of getting the cover off.

Don
 
Sorry I missed this.

I had luck for many years by yanking the cover out enough to use a spade bit and put a hole in the cover centered on the shaft. After that, an occasional spritz of light lube (WD40 or such) on the end of the shaft made the squeal go away for months, perhaps even years at a time.
 
minisub said:
Sorry I missed this.

I had luck for many years by yanking the cover out enough to use a spade bit and put a hole in the cover centered on the shaft. After that, an occasional spritz of light lube (WD40 or such) on the end of the shaft made the squeal go away for months, perhaps even years at a time.
Click to expand...

I'd forgotten about that quick fix. I did that on my '69, but used Non Detergent 30w, and it didn't squeek for a long time (3+years).
Thanx for the reminder.
And Happy new year.
 
matuva said:
Now you can see this cover #17, disconnect wires, twist, wiggle the cover and take it out


View attachment 36611
Click to expand...

Motors are more or less done when the bearings start making noise unless caught and oiled quickly. Regardless your blower motor is shorting out and burning up the connectors. :eek: See the connector in this pic with the melted side? (Red green black wires) Usually they only have 2 wires but it looks like yours has 3 wires. This connector is known for burning up so you need to:

1) Cut it out and solder the wires together.
2) Replace the shorting blower motor.
3) Add an additional ground although usually the positive is burning up.
 
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