Good morning,
Yes, you most likely will have a leak from that area. The sealer fills the gap between the intake gasket and the seal.
5. Apply sealer GM P/N 12346286 (Canadian P/N 10953472) or equivalent to the ends of the intake manifold seals.
6. Install the lower intake manifold seals.
Roy
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Friday, April 12th, 2019 AT 2:19 AM