2003 Sivarado 4.8 Engine Block Draining

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Jun 8, 2025 | 04:24 PM

#11

carfixer007

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Joined: Dec 2018

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From: Flint, MI USA

Quote:

Originally Posted by dandyd

I've never had trouble like this before getting bolt holes dry etc...... So since I'd never done this on GM 4.8, it was just wondering if there was a way to do it that I was missing as I didn't want to put it back together with any moisture in the bolt holes whatsoever.

Use teflon liquid on the bolt threads. GM makes it specifically for these head bolts.Just blow out the holes and install with the teflon.

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