Tools Required

• J 36660-A  Torque Angle Meter
• J 43032  Crankshaft Socket

Important:  Ensure that the crankshaft is in the TDC position for cylinder number one using the J 43032. 

1. Ensure the cylinder head locating pins are securely mounted in the cylinder block deck face.
2. Install a new left cylinder head gasket using the deck face locating pins for retention.
   Fig 1: Installing New Left Cylinder Head Gasket

   Courtesy of GENERAL MOTORS CORP.
3. Align the left cylinder head with the deck face locating pins.
4. Place the left cylinder head in position on the deck face.

   Important:  DO NOT reuse the old M11 cylinder head bolts.

5. Install new M11 cylinder head bolts (2).
6. Install the M6 cylinder head bolts at the front of the left cylinder head. Install the longer M6 cylinder head bolt (1) in the outboard location as shown. Install the two shorter M6 cylinder head bolts (3) in the locations shown.
   Fig 2: Installing New Cylinder Head Bolts

   Courtesy of GENERAL MOTORS CORP.
   CAUTION: Refer to in FASTENER NOTICE .
7. Tighten the M11 cylinder head bolts.

   Tighten 

   1. 7.1. Tighten the M11 cylinder head bolts a first pass in sequence to 40 N.m (30 ft lbs).
   2. 7.2. Tighten the M11 cylinder head bolts a second pass in sequence an additional 100 degrees using the J 36660-A. 
   3. 7.3. Tighten the M11 cylinder head bolts a final pass in sequence an additional 100 degrees, 200 degrees total, using the J 36660-A. 
   Fig 3: Identifying Cylinder Head Bolts Tightening Sequence

   Courtesy of GENERAL MOTORS CORP.
8. Tighten the long M6 cylinder head bolt (1).

   Tighten 

   Tighten the long M6 cylinder head bolt to 12 N.m (106 in lbs).

9. Tighten the two shorter M6 cylinder head bolts (2).

   Tighten 

   Tighten the two shorter M6 cylinder head bolts to 12 N.m (106 in lbs).

   Fig 4: Tightening M6 Cylinder Head Bolts

   Courtesy of GENERAL MOTORS CORP.
10. Install the rear torque strut bracket stud.

    Tighten 

    Tighten the rear torque strut bracket stud to 20 N.m (15 ft lbs).

11. Place the rear torque strut bracket in position on the left cylinder head.
12. Install the rear torque strut bracket bolt and nut.

    Tighten 

    Tighten the rear torque strut bracket bolt and nut to 50 N.m (37 ft lbs).

    Fig 5: Installing Rear Torque Strut Bracket

    Courtesy of GENERAL MOTORS CORP.