Transaxle Leak on my 1999 Buick LaSabre - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-10-2015, 12:50 PM   #1
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Default Transaxle Leak on my 1999 Buick LaSabre

I noticed fuild coming from transaxle housing next to motor block at the top of housing that connects to the block. Looked as through a valve on the housing was LEAKING BADLY,from top of the unit. I was told this maybe a pressure valve. Transmisson moves in reverse not well in drive. What is this? Again this is my 1999 Buick LaSabre v6 3800 series.

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Old 01-10-2015, 06:01 PM   #2
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I am not sure where exactly on top it is leaking, so Possibly this diagram may help.
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Old 01-10-2015, 08:17 PM   #3
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A picture would be helpful.
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Old 01-10-2015, 09:33 PM   #4
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Looking at this diagram I would say 405 Low Blow off Ball Valve Bore Plug, 406 Low Blow off Ball Valve Spring or 420a Low Blow off Ball Valve. Do you have any suggestions?
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Old 01-10-2015, 11:06 PM   #5
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As Mike Mentioned, a photo would be beneficial.
Or even a video so we can see the leak in action!
Look closer and confirm to see if the bore plug is actually missing.

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Old 01-11-2015, 01:31 PM   #6
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Approx. area?


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Old 01-11-2015, 09:27 PM   #7
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I can't tell from this view. It'* been raining all day here, I will being trying to video it tomorrow. Thanks for your interest.
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Old 01-11-2015, 09:29 PM   #8
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I'm working on getting a video of what it'* doing. It has rained all day here, tomorrow I'll give it a shot. Thanks for your interest.
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Old 01-13-2015, 08:48 AM   #9
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I'm not very computer friendly can someone assist me in getting a video put on here?
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Old 01-13-2015, 08:59 AM   #10
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Put it on Youtube, then copy the url link into the comments here.
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