PLEASSE HELP ME Cant find coolant drain plug??? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 01-31-2007, 07:20 PM   #1
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Default PLEASSE HELP ME Cant find coolant drain plug???

I cant find the drain plug on the radiator for the antifreeze/coolant.
I really need to change it, because in the resarvior tank the coolant is brown with rust floating in it.
I own the dealers service manual and that has no picure it only says it is near the bottom of the radiator.
This made me sick please tell me it aint soo. 98http://www.faqfarm.com/Q/Where_is_th...eville_3800_SE
plus i have a 98
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Old 01-31-2007, 07:45 PM   #2
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Its on the drivers side bottom of the radiator

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Old 01-31-2007, 07:51 PM   #3
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Whats it look like?
is it on the complete bottom?or more to the side of it?
how do you open it
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Old 01-31-2007, 07:55 PM   #4
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Its at the bottom, and faces the trans, almost as far left and down as you can go without it being on the bottom... And it simply unscrews

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Old 01-31-2007, 08:08 PM   #5
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Your looking for something kind of like this one here pictured. Only on the other side of the radiator on the Drivers side. Its called a Petcock.

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Old 01-31-2007, 09:43 PM   #6
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Just so you don't think you are crazy, you have to remove the plastic splash pan to get a really good ook at it like the picture shows.

Oh, and I think it'* best that you just open the rad cap and disconnect the lower rad hose instead. Two reasons:

That petcock is just plastic and more than one person has broken it when it'* stuck shut from never having been moved/opened before. Plus it drains slowwwwwly....

And, if you have a lot of junk, chunks, and rust in there, it will only serve to clog up that measly petcok and maybe evenjam it open with a chunk.


Oh, and another thing. If there'* that much crap, including rust in there. consider the possibility that you may have leak problems once your done flushing it. Not trying to scare you or cry wolf, just warning of the possibility. It sounds as if the previous owner did not keep a proper 50/50 coolant/water mix in it.

Get it flushed, really well and replace with a good 50/50 mix. Your engine will thank you.
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Old 02-01-2007, 08:52 AM   #7
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OMG what is this 50/50 mix.
I was planning on refilling it with coolant.
What would that do to the engine?

I think imma gonna need to wheel this car up on ramps to remove the splash guard
would that put the car on a angle and stop it from draining coolant?
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Old 02-01-2007, 10:11 AM   #8
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I think ramps would be fine Its not like the coolant rolls to the back of the car. lol.

50/50 is 50% coolant and 50% water. You could buy the coolant already mixed 50/50.
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Old 02-01-2007, 10:19 AM   #9
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You might want to refer to the Techinfo article about refilling your system. Our 3800'* are like babies, they need to be burped.

http://www.bonnevilleclub.com/forum/...=article&k=100
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Old 02-01-2007, 10:40 AM   #10
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you can buy 50/50 pre-mixed, but it'* cheaper to buy a gallon of pure antifreeze/coolant and dilute it yourself using another gallon sized jug, you get much more for your money

also, if you do try to open the petcock, i'd say use a pliers and gently turn it...it'* little and hard to turn with just your fingers
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