Tools Required

EN 46109  Guide Pins. See Special Tools .

Fig 1: Identifying Cylinder Block Guide Studs
Courtesy of GENERAL MOTORS CORP.
1. Install the 8 mm (0.315 in) guide from the EN 46109  into the cylinder block positions as shown. See Special Tools .
Fig 2: Identifying Engine Front Cover To Cylinder Block Seal
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2. Install the NEW engine front cover to cylinder block seal.
Fig 3: View of Placing Sealant on Engine Front Cover
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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).
Fig 4: View Of Engine Front Cover
Courtesy of GENERAL MOTORS CORP.
4. Place the engine front cover onto the EN 46109  and slide into position. See Special Tools .
5. Remove the EN 46109  from the cylinder block. See Special Tools .
Fig 5: View Of Engine Front Cover Deadener
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6. Install the engine front cover deadener.
Fig 6: View Of Engine Front Cover & Bolts
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NOTE: Refer to Fastener Notice
7. Loosely install the engine front cover bolts to hold the engine front cover deadener into position.
Fig 7: Identifying Remaining Engine Front Cover Bolts
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8. Loosely install the remaining engine front cover bolts.
Fig 8: View of Tightening Sequence of Engine Cover
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9. Tighten the engine front cover bolts in the sequence shown.

   Tighten: 

   1. Tighten the engine front cover bolts a first pass in sequence to 20 N.m (14 lb ft).
   2. Tighten the engine front cover bolts a second pass in sequence an additional 60 degrees.

Fig 9: View Of Camshaft Position Actuator Valve Bolts
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10. Place the camshaft position actuator valves in position on the front cover.
11. Install the camshaft position actuator valve bolts.

    Tighten:  Tighten the camshaft position actuator valve bolts to 10 N.m (89 lb in).

Fig 10: View Of Camshaft Position Sensor Bolts
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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.

    Tighten:  Tighten the camshaft position sensor bolts to 10 N.m (89 lb in).