GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 4WD 🢒 Engine 🢒 Engine Mechanical - 4.3L 🢒 Engine Front Cover Replacement

Removal Procedure
  1. Remove the engine oil pan. Refer to Oil Pan Replacement .
  2. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
  3. Remove the water pump. Refer to Water Pump Replacement in Engine Cooling.
  4. Remove the crankshaft position (CKP) sensor. Refer to Crankshaft Position Sensor Reluctor Ring Replacement in Engine Controls-4.3L.

    5. Notice: Do not reuse the engine front cover. Oil leaks may result.

  5. Remove the engine front cover. Refer to Engine Front Cover Removal .
  6. Discard the engine front cover.
  7. Clean all sealing surfaces.

Installation Procedure

    Notice: Do not reuse the engine front cover. Oil leaks may result.

  1. Install the engine front cover. Refer to Engine Front Cover Installation .
  2. Install the engine oil pan. Refer to Oil Pan Replacement .

    3. Important: Do not reuse the original seal (O-ring) when installing the crankshaft position sensor to the engine front cover. Erratic engine operation may result.

  3. Install the CKP sensor. Refer to Crankshaft Position Sensor Reluctor Ring Replacement in Engine Controls-4.3L.
  4. Install the water pump. Refer to Water Pump Replacement in Engine Cooling.
  5. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .