GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Balance Shaft Replacement

Removal Procedure

    Object Number: 188122 Size: SH
  1. Remove the radiator. Refer to Radiator Replacement in Engine Cooling.
  2. Remove the A/C condenser, if equipped. Refer to Condenser Replacement in HVAC Systems with A/C - Manual.
  3. Remove the lower intake manifold. Refer to Intake Manifold Replacement .
  4. Remove the valve lifter pushrod guide. Refer to Valve Lifter Replacement .
  5. Remove the engine front cover and the crankshaft position reluctor ring. Refer to Engine Front Cover Replacement .
  6. Remove the camshaft timing chain and sprockets. Refer to Timing Chain and Sprocket Replacement .

    7. Object Number: 9847 Size: SH
  7. Remove the balance shaft drive gear.

    8. Object Number: 5136 Size: SH
  8. Remove the bolt holding the balance shaft driven gear.
  9. Remove the balance shaft driven gear.

    10. Object Number: 188031 Size: SH
  10. Remove the bolts and the balance shaft retainer.

    11. Object Number: 5139 Size: SH

    Important: The balance shaft and the front bearing are serviced only as a package. Do not remove the bearing from the balance shaft.

  11. Tap on the balance shaft using a soft-faced hammer in order to remove the balance shaft. Refer to Balance Shaft Removal .
  12. Clean all sealing surfaces. Refer to Balance Shaft Clean and Inspect .

Installation Procedure

    Object Number: 188122 Size: SH
  1. Install the balance shaft. Refer to Balance Shaft Installation .
  2. Install the timing chain and the camshaft sprocket. Refer to Timing Chain and Sprocket Replacement .
  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. Important: When the timing marks on the camshaft and crankshaft sprockets are aligned the engine is at top dead center for cylinder number four. In order to install the distributor align the crankshaft balancer marks with the front cover marks for top dead center cylinder number one.

  5. Install the lower intake manifold. Refer to Intake Manifold Replacement .
  6. Install the A/C condenser, if equipped. Refer to Condenser Replacement in HVAC Systems with A/C - Manual.
  7. Install the radiator. Refer to Radiator Replacement in Engine Cooling.