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PostPosted: Sat Oct 21, 2017 9:52 pm 
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Posts like an LN3
Posts like an LN3

Joined: Thu Mar 31, 2011 8:57 pm
Posts: 434
Location: MUSKEGO,WISCONSIN
Year and Trim: 2005SLE CRIMSON
2005SLE PEARL
1975 MONTE CARLO
It appears that I have a slight leak coming from the UIM gasket.
The coolant is leaking out in the area by the thermostat housing.
I know they now use a new type of gasket.
What brand and part number should I use?
Thank you.


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PostPosted: Sun Oct 22, 2017 7:29 pm 
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Posts like an L67
Posts like an L67

Joined: Thu May 01, 2014 9:37 pm
Posts: 1301
Year and Trim: 1993 SLE
1998 SE
2001 SSEI
2002 SSEI
Change the upper intake manifold, not just its gasket.
The LIM gaskets that are most often recommended are the ACDelco metal gaskets.
89017816 is an ACDelco part number for yours but IDK if these are the plastic or the metal ones.
Not sure which UIM is best.
I used a Dorman UIM and FelPro gaskets on my car and was pleased.
The FelPro FEL-PRO MS98014T includes more gaskets and the sealant for the ends. You still need to buy the threadlocker for the bolts.
You absolutely MUST use a torque wrench on all bolts and properly prepare the gasket surfaces to get lasting good results.
Rockauto gives a forum discount--look in their post on the Pontiac Bonneville Club Vendors forum for the code.
This thread was better before Photobucket went Pay Only but the info is still good.
engine/topic3591.html
You can look on Youtube for videos too.


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PostPosted: Sun Oct 22, 2017 10:51 pm 
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Certified Bonneville Nut
Certified Bonneville Nut
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Joined: Mon May 10, 2010 6:11 pm
Posts: 9490
Location: Chicago, IL
Year and Trim: 2003 SLE
You can also drill, tap, and plug the coolant ports for the throttle body that come out of the LIM for a lasting solution to the UIM burn issue.

_________________
-Car Guy Carl
"Penelope" - 2003 SLE - 247k Miles
"Sydney" - 2000 Honda S2000 - 98k miles
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