Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Lower Intake Manifold








Apply sealer GM P/N 12345382 or equivalent to the lower intake manifold bolt threads.

NOTICE: Failure to tighten vertical bolts before the diagonal bolts may cause an oil leak.

Tighten the bolts in sequence to 13 Nm (115 inch lbs.).