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07 Lucerne blowing cold on passenger side, warm on driversI

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Old Jan 4, 2025 | 11:00 AM
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I'm wondering if the intake manifold gaskets are an issue...I have not pulled the LIM to see what condition they are in??
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Old Jan 4, 2025 | 03:27 PM
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Maybe there'* a bunch of crud floating around in there. Try flushing the core with the flush direction going backwards.
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