GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 XLR 🢒 Engine 🢒 Engine Mechanical - 4.6L (LH2) 🢒 Engine Block Assemble - Upper

    Object Number: 947648 Size: SH
  1. Install the engine block to transmission dowels.

    2. Object Number: 1646462 Size: SH
  2. Ensure the dowels are installed to the proper depth. The dowel should protrude (1) 9.0-10.0 mm (0.3543-0.3937 in).

    3. Object Number: 947656 Size: SH
  3. Remove the left side block deck face to left cylinder head dowels.

    4. Object Number: 1646463 Size: SH
  4. Ensure the dowels are installed to the proper depth. The dowel should protrude (1) 13.5-14.5 mm (0.5315-0.5709 in).

    5. Object Number: 947658 Size: SH
  5. Install the right side block deck face to right cylinder head dowels.

    6. Object Number: 1646463 Size: SH
  6. Ensure the dowels are installed to the proper depth. The dowel should protrude (1) 13.5-14.5 mm (0.5315-0.5709 in).

    7. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1804347 Size: SH

    Important: Not all blocks will have the hex set stud installed. If the block being serviced has a hex set stud installed, and the hex set stud is removed, a NEW hex set stud must be reinstalled in the same location.

    Important: Ensure the NEW hex set stud has pre-applied sealant to the threads.

  7. If removed, install a NEW hex set stud.

    8. Tighten
    Tighten the NEW hex set stud to 15 N·m (11 lb ft).


    Object Number: 1804349 Size: SH
  8. Ensure the NEW hex set stud is installed to the bottom of the hole and the end is flush or below (1) the surface of the engine block boss.

    9. Object Number: 947662 Size: SH

    Notice: Proper installation of the camshaft intermediate shaft plug must be ensured. An improperly installed camshaft intermediate shaft plug can interfere and restrict oil flow to the cylinder heads if installed too shallow, and may interfere with the crankshaft if installed too deep. Failure to properly install the camshaft intermediate shaft plug can lead to engine damage.

  9. Install the NEW camshaft intermediate drive shaft block plug.

    10. Object Number: 1646467 Size: SH
  10. Ensure the plug (1) is properly seated to the flange (2) in the bore and will not interfere with the engine block oil passages (3) or the crankshaft counter-weight (4).

    11. Object Number: 947653 Size: SH
  11. Install the engine block to engine front cover pins.

    12. Object Number: 1646468 Size: SH
  12. Ensure the pins are installed to the proper depth. The pin should protrude (1) 8.5-9.5 mm (0.3347-0.3740 in).

    13. Object Number: 947671 Size: SH
  13. Install the engine block to crankcase pins.

    14. Object Number: 1646469 Size: SH
  14. Ensure the pins are installed to the proper depth. The pin should protrude (1) 12 mm (0.4724 in).

    15. Object Number: 947667 Size: SH
  15. Install the engine coolant drain plug.

    16. Tighten
    Tighten the engine coolant drain plug to 20 N·m (15 lb ft).