GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1581861  Size: SH
  1. Drain the cooling system. Refer to Cooling System Draining and Filling .
  2. Disconnect the oil pressure sensor electrical connector (1).

  3. Object Number: 1556786  Size: SH
  4. Remove the oil filter.

  5. Object Number: 1584081  Size: SH
  6. Reposition the oil cooler outlet hose clamp at the oil cooler.
  7. Remove the oil cooler outlet hose from the oil cooler fitting.

  8. Object Number: 1584083  Size: SH
  9. Reposition the oil cooler inlet hose at the engine.
  10. Remove the oil cooler inlet hose from the engine fitting.
  11. Remove the oil cooler bolts and stud.
  12. Remove the oil cooler and gasket.

Installation Procedure

Notice: Maximum gasket performance is achieved when using new fasteners, which contain a thread-locking patch. If the fasteners are not replaced, a thread locking chemical must be applied to the fastener threads. Failure to replace the fasteners or apply a thread-locking chemical MAY reduce gasket sealing capability.


    Object Number: 1584083  Size: SH
  1. Apply threadlock to the bolt/stud threads, if required. Refer to Adhesives, Fluids, Lubricants, and Sealers for the correct part number.
  2. Position the oil cooler and gasket to the engine.
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the oil cooler bolts and stud.
  5. Tighten
    Tighten the to bolts and stud to 25 N·m (18 lb ft).

  6. Install the oil cooler inlet hose to the engine fitting.
  7. Position the oil cooler inlet hose at the engine.

  8. Object Number: 1584081  Size: SH
  9. Install the oil cooler outlet hose to the oil cooler fitting.
  10. Position the oil cooler outlet hose clamp at the oil cooler.

  11. Object Number: 1556786  Size: SH
  12. Install the oil filter.
  13. Tighten
    Tighten the filter to 30 N·m (22 lb ft).


    Object Number: 1581861  Size: SH
  14. Disconnect the oil pressure sensor electrical connector (1).
  15. Fill the cooling system. Refer to Cooling System Draining and Filling .
  16. Check and fill the crankcase, if necessary.