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. Refer to Detonation/Spark Knock .

Loose torque converter bolts

  1. Inspect the torque converter bolts and flywheel.
  2. Repair as required.

Cracked flywheel, automatic transmission

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

Excessive connecting rod bearing clearance

Inspect the following components, and repair as required:

    • The connecting rod bearings
    • The connecting rods
    • The crankshaft

Excessive crankshaft bearing clearance

Inspect the following components, and repair as required:

    • The crankshaft bearings
    • The crankshaft journals
    • The cylinder block crankshaft bearing bore