UIM replacement parts - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-28-2006, 04:07 AM   #1
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Default UIM replacement parts

Hey I just wanted to confirm with you guys who have done this before to make sure that I am getting the right parts for the UIM replacement.

I got the fixed up UIM from Bob Dillon.

My main question is am I going to need a new upper intake manifold gasket, throttle body gasket, and a new PCV valve? These come with the pack you can buy here, but since I bought from Bob, I don't have them yet: http://www.automotivepartsnetwork.co...product=229679

If I do need to get these items, can I get them at the dealer? Or do you know of a better place?

Later this week I'm going to stop by a pontiac dealer and get the GM Aluminum Frame Lower Intake Manifold Gaskets and the GM Coolant Bypass Elbow.

I think these are all the parts I need. Let me know if I'm wrong, and thanks for any advice. I'm looking forward to getting this swap done.
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Old 08-28-2006, 10:13 AM   #2
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Yeah, you're gonna need a UIM gasket, throttle body gasket, coolant elbow, some RTV siicone for the corners where the LIM gaskets meet the side rails (unless GM provides a little tube like FelPro) and some coolant unless you save all of yours. I like to use blue loctite on both the LIM bolts and the UIM bolts, too.

You don't have to buy a new pcv valve, (although this is as good a time as any), but make sure you recover both o-rings - one on the bottom (small end) of the valve, and the bigger one on top that seals the pcv chamber cover. If you lose track of the little one, you will pull too much vacuum on the crankcase which can damage the lip seals on the crankshaft.
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Old 08-28-2006, 01:19 PM   #3
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Ok, thanks!
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Old 08-28-2006, 01:47 PM   #4
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Eric, don't worry about the loctite or RTV. I have all that. Every flavor imaginable. I also have o-ring picks to get those little buggers out.

FYI, folks, this work will be happening at my house in the near future.
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Old 08-28-2006, 02:07 PM   #5
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okay thanks Bill.
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Old 08-29-2006, 02:14 AM   #6
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BUT WAIT
who will bring the beer
naw, dont worry..thats as standard as having loctite handy hehehe
should be a walk in the park
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Old 08-29-2006, 07:57 AM   #7
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Eric.. I wish I could say you are in "good" hands..lol j/k

Bill is this your first hands on S2 composite UIM swap?
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Old 08-29-2006, 09:58 AM   #8
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I think I've done enough L27'* and both Gens of L67'* (not to mention many othe cars in the last 25 years) to have no worries.
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Old 08-29-2006, 01:40 PM   #9
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uh oh...

jk

It seems like Bill knows his stuff... where I know zilch.
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Old 08-29-2006, 01:58 PM   #10
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I got my elbow and gaskets at checker auto for a lot less than the dealer...
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