GM Service Manual Online
For 1990-2009 cars only

Tools Required

EN 46111 Crankshaft Rotation Socket


    Object Number: 1306405  Size: SH
  1. Ensure the crankshaft sprocket is installed with the timing mark (1) visible.

  2. Object Number: 902842  Size: SH
  3. Install the crankshaft sprocket on to the nose of the crankshaft.
  4. Align the notch in the crankshaft sprocket with the pin in the crankshaft.
  5. Slide the crankshaft sprocket on the crankshaft nose until the crankshaft sprocket contacts the step in the crankshaft.

  6. Object Number: 1306406  Size: SH
  7. If necessary, align the crankshaft sprocket to the stage one timing drive assembly position using the EN 46111 . Refer to Camshaft Timing Drive Chain Alignment Diagram - Stage One.