For 1990-2009 cars

#### Special Tools

EN 46101 Spark Plug Tube Seal Guide

### Removal Procedure

1. Remove the upper intake manifold. Refer to Upper Intake Manifold Replacement .
2. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement .
3. Remove the right bank spark plugs. Refer to Spark Plug Replacement .
4. Unbolt the power steering reservoir and position aside. Refer to Remote Power Steering Fluid Reservoir Replacement .
5. Remove the right camshaft cover bolts.
6. Remove the right camshaft cover from the right cylinder head.
7. Clean the mating surfaces of the cylinder head and the camshaft cover. Refer to Camshaft Cover Cleaning and Inspection .
8. Install the EN 46101 onto the spark plug tubes of the right cylinder head.

### Installation Procedure

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 right camshaft cover into position onto the right cylinder head.
4. Loosely install the right camshaft cover bolts.

Caution: Refer to Fastener Caution in the Preface section.

5. Tighten the right camshaft cover bolts in the sequence to 10 N·m (89 lb in) .
6. Install the power steering reservoir. Refer to Remote Power Steering Fluid Reservoir Replacement .
7. Remove the EN 46101 from the spark plug tubes of the right cylinder head.
8. Install NEW spark plugs into the right cylinder head. Refer to Spark Plug Replacement .
9. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement .
10. Install the upper intake manifold. Refer to Upper Intake Manifold Replacement .