Right.

Here'* some background info that might help you.

The original design up to 2003 (someone mentioned 2005, but I remember the fix being made after 2003, can someone clarify), was defective by nature. You essentially have an EGR hose on the driver'* side that goes into the lower intake manifold. From the lower intake manifold, a stovepipe protrudes out. When you put the upper intake manifold on top, the stovepipe basically pushes the EGR gasses back into the intake. However, because the stovepipe is in direct contact (or extremely close) with the upper intake manifold, it tends to overheat the plastic there, which over time becomes brittle and cracks. Coincidentally, that'* exactly where the throttle body coolant passages are.

This is the image of the stovepipe when you pull the throttle body:
http://i26.photobucket.com/albums/c1...laccopy400.jpg

Here'* the view of the upper intake manifold from underneath. The middle pipe is where the EGR stovepipe goes through, and the two around it are the coolant passages.

http://img.photobucket.com/albums/v1...9plugholes.jpg

As you can imagine, if the plastic cracks there, you can drain all of your coolant very quickly. The replacement manifolds have a revised stovepipe design that leaves some space between the plastic.

In order to check if you have the revised intake, check the datestamp on the top of the manifold. If its 03 or above, you shouldn't have this problem, but if its any year before that, then it is very likely that'* what your problem is.

If you have to remove it, you should replace the lower intake manifold gaskets as well, since those also have a tendancy to go bad on these cars. If you do replace it, make sure to get the revised aluminum design, not another set of plastic gaskets.

ok i got it off and there is some coolant laying just inside the throttle body but I dont know if its from removing the body ?? The date code is 05 which i assume is 2005. Now what do I do...

Can one of you guys e-mail me with your ph number and I will call you PLEASE !!
Thx

cvcman@twcny.rr.com

If the date code is 05, then you have a revised version. This could be either your throttle body gasket, or your lower intake manifold gaskets.

Oh and btw, e-mail sent.

Ok heres the deal, it still had the larger dia stovepipe,date code was 05. I removed the intake and there was a hole right thru where the pipe goes about the size of a pencil.

I bought the Dorman kit for 94.00, 103.00 with tax and with "Andrie'*" help took about 1 hour and it was running. Few small issues with me forgetting the oring for the PCV ( thanks again Andrie) and she seems good to go. I dont see any external leaks and I gave her a fresh oil chg.

Drove it around seems to run cooler now ?? Coolant seems ok. This ne kit has a much smaller pipe. I didnt do the lower gaskets because they were done at the dealer a few years ago. Hope they will be ok. Whats the symptoms when these go bad and how likely is it they will.

The car has 180k and if i can run her another 30k I will be happy !

Thanks again to all you guys are a gret bunch !

Throttle Body Assembly Replacement VIN K

<A href="http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=319081&evc=sm&pubid=94&cellId= 24929&mspsdsubkey=902#ss1-319081">Removal Procedure

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<A href="http://127.0.0.1:9001/servlets/BlobShtml?ShtmlFile=319081&evc=sm&pubid=94&cellId= 24929&mspsdsubkey=902#ss2-319081">Installation Procedure

1. [*]

Document ID# 319081
1999 Buick Park Avenue

heres the pic, kinda hard to see the hole

im stressing about the lower gaskets now, the coolant in this car was flused at the dealer every 30k miles according to the notes in the manula I got with the car.
I have removed the Dex and have the "mix with any color" coolant but even when I drained and fluhed it when I got it it was nice and clean.

Is this a good sign ??

Do you guys think I should add the GM sealant tabs I see people talking about ??

How likely are these to go too ?

Symptoms ?

Series 2 3800 LIM gaskets at 113k miles on a 1996 Buick Regal. They weren't leaking, but as you can see, they were on their way out:

http://s16.photobucket.com/albums/b3...00/Vik96Regal/

Click pictures to zoom in. It looked as though her coolant had never been changed too. If you had your coolant flushed often, you should have no problem.

Symptoms will be exactly what you had this time around.

Do NOT add any coolant stop-leak additives. You run a risk of clogging your heater core, and that will really test your sense of humor.

Let me know if you have any other questions.