GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Remove the radiator. Refer to Radiator Replacement in Engine Cooling.
  2. Remove the A/C condenser, if equipped. Refer to Condenser Replacement in Heating Ventilation and Air Conditioning.
  3. Remove the valve lifter pushrod guide. Refer to Valve Lifter Replacement .
  4. Remove the camshaft timing chain and sprockets. Refer to Timing Chain and Sprocket Replacement .
  5. Important: The balance shaft and the front bearing are serviced only as a package. Do not remove the bearing from the balance shaft.

  6. Remove the balance shaft. Refer to Balance Shaft Removal in Engine Unit Repair.
  7. Clean and inspect the balance shaft. Refer to Balance Shaft Cleaning and Inspection in Engine Unit Repair.

Installation Procedure

  1. Install the balance shaft. Refer to Balance Shaft Installation in Engine Unit Repair.
  2. Install the camshaft timing chain and the camshaft sprocket. Refer to Timing Chain and Sprockets Installation in Engine Unit Repair.
  3. Install the crankshaft position reluctor ring and the engine front cover. Refer to Crankshaft Position Sensor Reluctor Ring Replacement
  4. Install the valve lifter pushrod guide. Refer to Valve Lifter Replacement .
  5. Install the A/C condenser, if equipped. Refer to Condenser Replacement in Heating Ventilation and Air Conditioning.
  6. Install the radiator. Refer to Radiator Replacement in Engine Cooling.