Special Tools

EN 46101 Spark Plug Tube Seal Guide

1. Remove the left bank spark plugs. Refer to Spark Plug Replacement.



2. Remove the left camshaft cover bolts.
3. Remove the left camshaft cover from the left cylinder head.
4. Clean the mating surfaces of the cylinder head and the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection.



5. Install the EN 46101 onto the spark plug tubes of the left cylinder head.

1. Install new camshaft cover bolt grommets prior to installing the camshaft cover bolts.



2. Place a bead 8 mm (0.3150 in) in diameter by 4 mm (0.1575 in) in height of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover split lines (1).



3. Place the left camshaft cover into position onto the left cylinder head.



4. Loosely install the left camshaft cover bolts.

Caution: Refer to Fastener Caution in the Preface section.




5. Tighten the left camshaft cover bolts in the sequence shown to 10 N·m (89 lb in).



6. Remove the EN 46101 from the spark plug tubes of the left cylinder head.
7. Install NEW spark plugs into the left cylinder head. Refer to Spark Plug Replacement.