GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • DW-110-060 Engine Assembly Support Fixture
    • EN-48245 Timing Belt Adjuster - Camshaft Holder
    • EN-48246 Timing Belt Adjuster - Crankshaft Holder

Removal Procedure

    Warning: Refer to Battery Disconnect Warning in the Preface section.


    Object Number: 1863838  Size: SH
  1. Disconnect the negative battery cable.
  2. Remove the engine cover. Refer to Engine Cover Replacement.
  3. Remove the charge air system hoses and ducts. Refer to Charge Air Cooler Inlet Pipe and Outlet Pipe Replacement.
  4. Remove the accessory belt. Refer to Drive Belt Replacement.

  5. Object Number: 1821742  Size: SH

    Important: Only lift the engine far enough to take the weight off the engine mount assembly, or damage to the mount and lifting equipment failure may occur.

  6. Support the engine assembly using DW-110-060 .

  7. Object Number: 1864051  Size: SH
  8. Remove the engine mount damping block.

  9. Object Number: 1822549  Size: SH
  10. Remove the timing belt upper cover.
  11. Remove the accessory belt idler.
  12. Remove the tensioner. Refer to Drive Belt Tensioner Replacement.
  13. Remove the crankshaft pulley.
  14. Remove the timing belt lower cover.
  15. Remove the engine mount bracket.

  16. Object Number: 1820436  Size: SH
  17. Remove the timing belt tensioner.
  18. Remove the timing belt.
  19. Remove the camshaft sprocket.

Installation Procedure


    Object Number: 1822549  Size: SH
  1. Install the timing belt. Refer to Timing Belt Inspection and Adjustment.
  2. Install the engine mount bracket.
  3. Install the timing belt lower cover.
  4. Install the crankshaft pulley.
  5. Install the accessory belt idler.
  6. Caution: Refer to Fastener Caution in the Preface section.

  7. Install the timing belt upper cover.
  8. Tighten

        • Tighten the engine mount bracket bolts to 45 N·m (33.1 lb ft).
        • Tighten the timing belt lower cover bolts to 11 N·m (97.4 lb in).
        • Tighten the crankshaft pulley bolts to 34 N·m (25.1 lb ft).
        • Tighten the accessory belt idler bolt to 52 N·m (38.4 lb ft).
        • Tighten the timing belt upper cover bolts to 11 N·m (97.4 lb in).