GM Service Manual Online
For 1990-2009 cars only

Cause

Correction

Low oil pressure

  1. Perform an oil pressure test. Refer to Oil Pressure Diagnosis and Testing .
  2. Repair or replace, as required.

Detonation or spark knock

Verify the correct operation of the ignition controls. Refer to Detonation/Spark Knock .

Loose torque converter bolts or improperly installed torque converter - automatic transmission only

  1. Inspect the torque converter bolts and flywheel.
  2. Verify correct installation of the torque converter.
  3. Repair, as required.

Cracked flywheel - automatic transmission

  1. Inspect the flywheel bolts and flywheel.
  2. Repair, as required.

Excessive connecting rod bearing clearance

  1. Inspect the following components:
  2. • The connecting rod bearings
    • The connecting rods
    • The crankshaft
  3. Repair, as required.

Excessive crankshaft bearing clearance

  1. Inspect the following components:
  2. • The crankshaft bearings
    • The crankshaft journals
    • The cylinder block crankshaft bearing bore
  3. Repair, as required