GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2000 🢒 Seville 🢒 Engine 🢒 Engine Mechanical - 4.6L 🢒 Secondary Camshaft Drive Chain Replacement

Removal Procedure
  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  2. Remove the oil pump in order to view the timing marks. Refer to Oil Pump Replacement .

    3. Object Number: 517185 Size: SH
  3. Align the timing marks (1).

    4. Object Number: 212695 Size: SH
  4. Remove the right secondary drive chain tensioner retaining bolts.
  5. Remove the right secondary drive chain tensioner allowing it to expand as you remove it.

    6. Object Number: 212694 Size: SH
  6. Remove the left secondary drive chain tensioner retaining bolts.
  7. Remove the left secondary drive chain tensioner allowing it to expand as you remove it.
  8. Remove the camshaft covers. Refer to Camshaft Cover Replacement .
  9. Remove the camshaft position sensor. Refer to Camshaft Position Sensor Replacement in Engine Controls-4.6 L.

    10. Object Number: 210266 Size: SH
  10. Remove the camshaft sprocket retaining bolts from all four camshafts. Use an open wrench on the hex cast near the front of each camshaft to prevent the engine from rotating when loosening the camshaft sprocket bolts.
  11. Lift the right secondary drive chain from the sprocket teeth and slide the camshaft sprockets off of the camshafts.

    12. Allow the right chain to fall into the front cover area.


    Object Number: 506472 Size: SH
  12. Remove the right secondary drive chain from the engine block.

    13. Object Number: 506476 Size: SH
  13. Lift the left secondary drive chain from the sprocket teeth and slide the camshaft sprockets off of the camshafts.

    14. Allow the left chain to fall into the front cover area.

  14. Remove the left secondary drive chain from the engine block.

Installation Procedure

    Object Number: 534272 Size: SH
  1. For secondary drive chain installation. Refer to Setting Camshaft Timing .
  2. Install the oil pump. Refer to Oil Pump Replacement .
  3. Install the engine front cover. Refer to Engine Front Cover Replacement .
  4. Install the camshaft position sensor. Refer to Camshaft Position Sensor Replacement in Engine Controls-4.6 L.
  5. Install the camshaft covers. Refer to Camshaft Cover Replacement .