Transmission pan drain plug....*updated with a pic* - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-19-2006, 01:32 AM   #1
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Default Transmission pan drain plug....*updated with a pic*

Well, when I changed my transmission fluid here a while back, I put in a drain plug, using one of the little kits from the auto parts store, worked great for a while, but while i was installing my handling kit today i noticed there was fluid slowly seeping out of the plug hole...and it looked like the seal of the bolt that is removeable is trashed....so that sucks

Im going to try buying another kit, and see if putting in a new bolt with a new seal doesnt help, Id like to avoid dropping the pan again if i can.I think i overtightened the bolt the first time around and the seal is just trashed, you can see it hanging outside the bolt...

So in case youre debating on doing this, be sure you do it right the first time, this couldve been a very costly error if i hadnt noticed it now, because i very seldom check my transmission fluid, although i think i wouldve started to notice low fluid symptoms before anything serious occured due to it being such a slow leak, but a leak nonetheless.
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Old 06-19-2006, 08:31 AM   #2
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I've considered this saame thing. Thought about one of those FRAM quick change thingies.

Problem is, you still need to get in there to change the fileter and clean the magnet. So, it'd potentially make the job al lot less messy, but you still need to drop the pan.
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Old 06-19-2006, 08:44 AM   #3
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Can you link us to the kit. I'd like to see what it looks like.
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Old 06-19-2006, 12:08 PM   #4
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Quote:
Originally Posted by BillBoost37
Can you link us to the kit. I'd like to see what it looks like.

Me or MOS?

I cant link you to the one I have

and MOS I dont need to change the filter, I just changed the fluid not 2-3000 miles ago, so if i do go in there again ill just buy some more fluid and try and patch things up, but ill try to fix it externally first, youd just have to see it..
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Old 06-19-2006, 12:20 PM   #5
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Quote:
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Can you link us to the kit. I'd like to see what it looks like.

Me or MOS?.
You....how about a similar link... something to give me a better idea. I've never seen one before.
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Old 06-19-2006, 12:36 PM   #6
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it looks something like this, advanced auto parts sells them, my brother uses them in him oil pan and his trany pan too.

im having truble finding the link for the product




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Old 06-19-2006, 02:44 PM   #7
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ill be buying one in a couple days Boost, ill take some pics of it then, add them to this thread and ill even PM you to let you know about it

Its next to impossible for me to accurately describe it with words, so ill have to show you pics.
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Old 06-20-2006, 09:46 PM   #8
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ok i just wanted to show you what I have in there right now, and do my best to describe what youre seeing and how it works.



ok, what looks to be a large nut is actually a 1/2 inch bolt, with a hollow center that is also threaded to accept the smaller bolt also show in this picture.

You drill a 1/2 inch hole in the pan, slip the bolt into the hole from the bottom with a gasket in between, and then put another gasket on the top side of the pan, and install a nut on top of that bolt and tighten....

Now i tightened everything pretty dang tight, because I really didnt know how tight it was supposed to be, there is also an o-ring around the smaller bolt that i think the ring is gone or damaged, because the other day there was a piece of it hanging off...so im thinking that i either overtightened the bolts, causing the gaskets to not seal right, the gaskets feel like a hard plastic but they compress as you tighten them.

another possibility is that the pan surfaces arent completely flat, the bottom of the pan flared out when i drilled through, and i dremeled it down as best i could, then ran out of battery on my dremel(dont ever buy a cordless dremel and use it for heavy stuff!) but i thought it would be good enough...

So my options are to:

A} Try just replacing the smaller bolt (which i think will be pointless as you can see its leaking around the gasket as well

B) drop the pan, buy a new kit, prepare the pan a bit better, and hope for the best

C) Leave it alone, keep an eye on the fluid levels(this is a VERY slow leak) and try not to park where anyone can see the little puddle it leaves
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Old 06-21-2006, 08:20 AM   #9
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How about a rubber o ring gasket. Many times you can get new rubber plug gaskets at the parts stores. I found some at Autozone before. That could stop the little seepage you currently have.
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Old 06-21-2006, 09:15 AM   #10
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Next time you might try a 1/2 inch hole saw. They make very precise holes without the risk of causing distortion. Their real advantage is with thin steel materials.

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