GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 37228 Seal Cutter

Removal Procedure


    Object Number: 1335470  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
  2. Remove the water pump. Refer to Water Pump Replacement .
  3. Remove the crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement .
  4. Remove the right wheelhouse panel. Refer to Front Wheelhouse Liner Replacement - Right Side .
  5. Disconnect the crankshaft position (CKP) sensor electrical connector.

  6. Object Number: 1336119  Size: SH
  7. Remove the CKP sensor bolt and sensor.
  8. Remove the CKP sensor spacer bolts and spacer.
  9. Remove and discard the O-rings from the sensor and the spacer.

  10. Object Number: 738866  Size: SH
  11. Remove the upper oil pan to engine front cover bolts.

  12. Object Number: 1336120  Size: SH
  13. Remove the engine front cover bolts.
  14. Separate the engine front cover from the cylinder block and upper oil pan using J 37228 .
  15. Important: Do not bend the turbocharger coolant pipe.

  16. Remove the engine front cover.

  17. Object Number: 793901  Size: SH
  18. If necessary, remove the pressure relief valve O-ring.
  19. Clean and inspect the front cover. Refer to Engine Front Cover Cleaning and Inspection .

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 793901  Size: SH
  1. If necessary, install a NEW pressure relief valve O-ring.
  2. Lubricate the O-ring with engine oil.
  3. Tighten
    Tighten the valve to 39 N·m (29 lb ft).


    Object Number: 663817  Size: SH
  4. Apply a 2-3 mm (1/8 in) wide by 0.5-1.5 mm (1/16 in) high, bead of sealant to the engine front cover sealing surface to the engine block. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number.
  5. Apply a 2-3 mm (1/8 in) wide by 0.5-1.5 mm (1/16 in) high, bead of sealant to the engine front cover sealing surface to the upper oil pan. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number.

  6. Object Number: 1336120  Size: SH
  7. Install the engine front cover.
  8. Install the engine front cover bolts.
  9. Tighten
    Tighten the bolts to 25 N·m (18 lb ft).


    Object Number: 738866  Size: SH
  10. Install the upper oil pan to engine front cover bolts.
  11. Tighten
    Tighten the bolts to 21 N·m (15 lb ft).


    Object Number: 1336119  Size: SH
  12. Install a NEW O-ring to the CKP sensor spacer.
  13. Lubricate the O-ring with clean engine oil.
  14. Important: The crankshaft position sensor spacers are machined with different timing positions. However, if the crankshaft position sensor spacer requires replacement, replace with a grade "C" spacer.

  15. Install the CKP sensor spacer and bolts.
  16. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  17. Install a NEW O-ring to the CKP sensor.
  18. Lubricate the O-ring with clean engine oil.
  19. Install the CKP sensor and bolt.
  20. Tighten
    Tighten the bolt to 10 N·m (89 lb in).


    Object Number: 1335470  Size: SH
  21. Connect the CKP sensor electrical connector.
  22. Install the right wheelhouse panel. Refer to Front Wheelhouse Liner Replacement - Right Side .
  23. Install the crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement .
  24. Install the water pump. Refer to Water Pump Replacement .
  25. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .