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Old 01-18-2020, 03:22 PM   #1 (permalink)
peyton
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power window motor question

hello all,

in going thru my 86 suburban, i just replaced the rf power window motor (acdelco 12497971) and noticed that there is a hole in the plastic near the power connector. the old motor had a hole as well so i'm wondering what is the purpose of it. must be there for a reason. thanks,

peyton

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Old 01-18-2020, 06:03 PM   #2 (permalink)
davester
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Vent hole so it's not sealed? access hole for a screw?

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Old 01-18-2020, 08:24 PM   #3 (permalink)
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Since it's in an area that can be exposed to moisture I would guesstimate that it is a drain/weep hole.
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Old 01-18-2020, 10:04 PM   #4 (permalink)
peyton
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Quote:
Originally Posted by OkDually View Post
Since it's in an area that can be exposed to moisture I would guesstimate that it is a drain/weep hole.
yes, that is a reasonable guess, and i don't have a better one, but depending on which window the're installed on, the weep hole may be at the top and the connector at the bottom or vice versa. possibly a place to squirt a bit of lubrication? the directions, such as they are, certainly don't say. thanks

peyton
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Old 01-20-2020, 03:15 PM   #5 (permalink)
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here's a pic

here is a pic of the hole, and its cover, that i am referring to. does this ring a bell??

peyton
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Old 01-20-2020, 04:42 PM   #6 (permalink)
davester
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Well, if you want a definitive answer as to what the hole is for, you'll probably have to contact the manufacturer. I would suggest not squirting stuff in there until you find out.
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Old 01-21-2020, 10:38 AM   #7 (permalink)
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Over at 67-72 chevy trucks there is a guy in the 73-87 forum that was a GM engineer that put these together back in the day, he might know.


Only other reason I can think that hole might be there is to manually crank the window up or down with some special GM tool.
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Old 01-23-2020, 12:20 AM   #8 (permalink)
peyton
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Quote:
Originally Posted by legendman View Post
Over at 67-72 chevy trucks there is a guy in the 73-87 forum that was a GM engineer that put these together back in the day, he might know.


Only other reason I can think that hole might be there is to manually crank the window up or down with some special GM tool.
thanks legendman,

i'll try to track that guy down.

you know, your idea seems very likely to me. there must be some way to get the windows up (or down as the case may be) when the motors are dead. thanks again,

peyton
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Old 01-26-2020, 04:57 PM   #9 (permalink)
peyton
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another answer

in case anyone is interested, i received this answer on the "gmsquarebody" web site.

/quote
CorvairGeek (jerry) said: ↑
IIRC, you can insert an object in the hole and press the 2 dissimilar layers of metal together (thermal overload protection, cheap, crap design) when they have opened abnormally. This is supposed to allow you to operate the motor (if obstructed in some applications) to access it for repair.
/unquote

seems reasonable to me. thanks,

peyton
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