For 1990-2009 cars

#### Special Tools

EN-46109 Guide Pins

For equivalent regional tools, refer to Special Tools.

1. Install the 8 mm (0.315 in) guide from the EN-46109 pins into the cylinder block positions as shown.
2. Install the NEW engine front cover to cylinder block seal.
3. Place a 3 mm (0.118 in) bead of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover as shown (1).
4. Place the engine front cover onto the EN-46109 pins and slide into position.
5. Remove the EN-46109 pins from the cylinder block.
6. Install the engine front cover deadener.

Caution: Refer to Fastener Caution in the Preface section.

7. Loosely install the engine front cover bolts to hold the engine front cover deadener into position.
8. Loosely install the remaining engine front cover bolts.
9. Tighten the engine front cover bolts in the sequence shown (1-22) to 20 N·m (14 lb ft).

Tighten the engine front cover bolts a second pass in sequence an additional 60 degrees.

10. Place the camshaft position actuator valves in position on the front cover.
11. Install the camshaft position actuator valve bolts and tighten to 10 N·m (89 lb in).
12. Install NEW O-rings on the camshaft position sensor.
13. Place the camshaft position sensors in position on the front cover.
14. Install the camshaft position sensor bolts and tighten to 10 N·m (89 lb in).