PCV Orifice Replacement

WARNING: This page is about a different variant/trim than selected.

Fig 1: View Of PCV Orifice

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: If the PCV orifice is damaged or plugged and cannot be cleaned out, the PCV orifice can be replaced.

Remove the old PCV orifice by griping the neck of the orifice with pliers and twisting and pulling out of the right camshaft cover.

Fig 2: Identifying Sealant Area On PCV Orifice

Courtesy of GENERAL MOTORS CORP.

Apply sealant GM P/N 12378521 (Canadian P/N 88901148) or equivalent to the NEW PCV orifice (1).

Fig 3: View Of PCV Orifice & Right Camshaft Cover

Courtesy of GENERAL MOTORS CORP.

Install the NEW PCV orifice into the right camshaft cover. After insertion, twist the PCV orifice in order to eliminate any vertical leak paths in the sealant.