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Home >> Chevrolet >> 2004 >> Astro Van Cargo, RWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 4.3L - Introduction >> Repair Instructions >> Camshaft Position (CMP) Sensor Replacement >> Installation Procedure
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Installation Procedure

IMPORTANT: Do not use the old cap, CMP sensor, and rotor screws. Use the replacement screws that have been coated with a thread locking compound.
  1. Insert the CMP sensor through the reluctor wheel slot.
    Fig 1: View Of CMP Sensor & Screws
    GM301398Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  2. Install new CMP mounting screws.

    Tighten:  Tighten the bolts to 2.2 N.m (19 lb in).

    Fig 2: View Of CMP Screws
    GM4341Courtesy of GENERAL MOTORS CORP.
  3. Install the rotor onto the reluctor wheel.
    Fig 3: Expanded View Of Distributor Rotor
    GM156748Courtesy of GENERAL MOTORS CORP.
  4. Install new rotor screws.

    Tighten:  Tighten the screws to 1.9 N.m (17 lb in).

    Fig 4: View Of Distributor Rotor Screws
    GM4354Courtesy of GENERAL MOTORS CORP.
  5. Fig 5: Distributor Cap View
    GM157986Courtesy of GENERAL MOTORS CORP.
  6. Install the distributor cap.
  7. Install new distributor cap screws.

    Tighten:  Tighten the screws to 2.4 N.m (21 lb in).

    Fig 6: Locating Distributor Cap Screws
    GM157984Courtesy of GENERAL MOTORS CORP.
  8. Connect the CMP sensor harness connector.
    Fig 7: Identifying Camshaft Position (CMP) Sensor Harness Connector
    GM302829Courtesy of GENERAL MOTORS CORP.
  9. Connect the spark plug wires and ignition coil wire. Refer to Spark Plug Wire Replacement .
    Fig 8: View Of Spark Plug Wires & Ignition Coil Wire
    GM302854Courtesy of GENERAL MOTORS CORP.
  10. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.