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Old 04-18-2006, 01:17 PM   #1
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Default thermostat question on the 00

finally getting around to doing the drilled 180 and i went to pick it up at autozone today... they had the thermostat and o-ring on the computer, but nothing showed up for the gasket except for some sealant.. i had him look up the 98gtp motor to find the gasket number... they should be the same right?

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Old 04-18-2006, 01:57 PM   #2
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I have an '01 and there was no paper gasket...it'* a rubber o-ring. Previously I owned a 98 Grand Prix GT and it had the paper gasket.
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Old 04-18-2006, 02:02 PM   #3
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there is no paper gasket, and also there is no sealant needed, tha o-ring does all the work for you
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Old 04-18-2006, 02:16 PM   #4
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Interesting. Looks like a different design on the gaskets. 92-99 to my knowledge have a thermostat rubber gasket and a paper water outlet gasket. However a quick search of Advances online site does not show the paper.
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Old 04-18-2006, 02:52 PM   #5
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No paper just the rubber o-ring is all that is needed.
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Old 04-18-2006, 05:19 PM   #6
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Heres some info on the t-stat questions about what years need gaskets and what years don't. There was a design change to the t-stat outlet housing in 99 and no gasket was needed after the design change. Here'* the info from GM.

Edit: This info may look a little confusing since I just copied and pasted it. I think everyone can figure it out though.


Subject: Info - Thermostat Design Change #99-06-02-018 - (11/22/1999)



Models: 1994-2000 Buick LeSabre, Park Avenue, Regal

1995-1999 Buick Riviera

1995-2000 Chevrolet Camaro

1998-2000 Chevrolet Lumina, Monte Carlo

2000 Chevrolet Impala

1994-1996 Oldsmobile Ninety - Eight

1994-1998 Oldsmobile Eighty - Eight

1998-1999 Oldsmobile Intrigue

1994-2000 Pontiac Bonneville

1995-2000 Pontiac Firebird

1997-2000 Pontiac Grand - Prix

with 3.8L Engine (VINs 1, K, L - RPOs L67, L36, L27)




--------------------------------------------------------------------------------

There may be some confusion as to the correct thermostat application for the above mentioned vehicles when ordering a replacement part due to a design change for the 1999 and 2000 MY vehicles. The design change will affect service replacements of previous 90 degree V6 engines.

The new design will not fit previous 90 degree V6 engines due to a change in the position of the pintle and a different shape of the upper thermostat assembly. Refer to the following figure for identification of the current thermostat.

Important: Noticeable offset of the pintle position.





Parts Information
Parts are currently available from GMSPO. The following table contains: part numbers for the thermostats, the type of housing, whether it uses a gasket or O-ring, and their respective part numbers. The information is listed by year, then engine RPO code. Use the table to order the correct replacement thermostats.

Year
Engine RPO
Part #
Housing Style
Housing Gasket Type
Housing Gskt P/N
Seal P/N

1994
L27
24506986
2 - Bolt
Flange
25535214
25535126


L67
24506986
2 - Bolt
Flange
25535214
25535126

1995
L27
24506986
2 - Bolt
Flange
25535214
25535126


L36
24506986
2 - Bolt
Flange
24502433
25535126


L67
24506986
2 - Bolt
Flange
25535214
25535126

1996
L36
24506986
2 - Bolt
Flange
24502433
25535126


L67
24506986
2 - Bolt
Flange
24502433
25535126

1997
L36
24506986
2 - Bolt
Flange
24502433
25535126


L67
24506986
2 - Bolt
Flange
24502433
25535126

1998
L36
24505924
2 - Bolt
Flange
24502433
25535126


L67
24505924
2 - Bolt
Flange
24502433
25535126

1999
L36
24505924
2 - Bolt
Flange
On T-stat
25535126


L67
24505924
2 - Bolt
Flange
On T-stat
25535126

2000
L36
24505924
2 - Bolt
Flange
On T-stat
25535126


L67
24505924
2 - Bolt
Flange
On T-stat
25535126
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Old 04-18-2006, 09:42 PM   #7
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My has a paper gasket installed on it.2000 ssei My 90 sse does not
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Old 04-18-2006, 11:44 PM   #8
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Mine just has the rubber O-ring also. I've swapped between the 180 for winter and 195 for summer without any leaks.

Edit - Oops, had that bakkereds...make that 195 for winter, and and 180 drilled for summer.
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Old 04-19-2006, 12:49 AM   #9
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well sounds like ill be alright with no paper then... cool... now i dont have to do any scraping!
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Old 04-19-2006, 12:23 PM   #10
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well i just did it...

i guess because it was the 98 gtp motor it had the paper gasket.. so i whipped out the dremel and got er all shiny dropped in the new drilled 180 and threw on the new paper gasket... no leaks... bingo
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