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 10-11-2002, 12:54 PM
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Originally Posted by Dylansdad
hey Deathrat, It is a 96 SE, I added all that stuff to my signature, you may not have noticed it. But is a TSB something the dealer is to fix at their expense, or just a suggested replacement procedure?? I have priced the gasket kit at 40 and the intake itself at 250. That is from a dealer locally.........good price????
A TSB = Tech Service Bullitin!
GM Warranty will cover this ONLY IF YOUR CAR IS STILL UNDER WARRANTY!
Try the dealer'* Service Dept for any other suggestions! Remember, you don't have to commit to anything! If i find that TSB, I'll post it!
Old 10-11-2002, 01:04 PM
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$240 sounds high, DD. I think you can find one online for less than $200. Dunno what kind of shipping you'd have to pay, though.
Old 10-11-2002, 05:36 PM
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Get the 8-digit GM part numbers and run them through www.gmpartsdirect.com

They should come in about 40% cheaper than the dealer. If you can't see the p/n on your intake, the Rat can lookitup for ya!
Old 10-12-2002, 08:09 PM
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Originally Posted by Dylansdad
hey Deathrat, It is a 96 SE, I added all that stuff to my signature, you may not have noticed it. But is a TSB something the dealer is to fix at their expense, or just a suggested replacement procedure?? I have priced the gasket kit at 40 and the intake itself at 250. That is from a dealer locally.........good price????
OKAY, Here'* that TSB I promised you!

ENGINE COOLANT CONSUMPTION OR COOLOANT LEAK (INSPECT FOR MATERIAL DEGRADATION/REPLACE INTAKE MANIFOLD) #01-06-01-007A
1995-1997 Buick Riviera
1995-1998 Buick LeSabre, Park Avenue
1996-1998 Buick Regal
1998 Chevrolet Lumina, Monte Carlo
1995-1996 Oldsmobile Ninety-Eight
1995-1998 Oldsmobile Eighty-Eight
1998 Oldsmobile Intrigue
1995-1998 Pontiac Bonneville
1997-1998 Pontiac Grand Prix
with 3.8 L Engine (VIN K --RPO L36)

CONDITION:
Some owners may coment on excessive engine coolant consumption, or an engine coolant leak near or under the throttle body area of the upper intake manifold.
CAUSE:
Upper intake manifold composite material may degrade around the EGR stove pipe and could result in an internal or external coolant leak.
CORRECTION:
Remove the upper intake manifold as per service manual instructions.
Inspect the inner diameter of the EGR passage for signs of material degradation. Degradation will appear as signs of "pitting" of the composite material in the EGR port passage.
If degradation of upper intake manifold composite material is found, replace the lower and upper intake manifolds with the following part numbers:
> Lower Intake -- 24508923
> Upper Intake -- 17113136 (Includes necessary upper intake plenum gaskets)
> Lower Intake Gasket -- 12537197

I would also recommend using GM Sealant (P/N 12346192) to seal the corners of the lower intake manifold gasket to the cylinder heads. This GM Sealant will also be needed to re-seal the upper intake manifold to the lower intake manifold (As no Gasket is there from factory) If you're planning to re-paint your upper intake manifold, now would be a good time to do it! A new thermostat & gasket would also be a good choice now too.
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