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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 973 (Engine Controls - 4.8L, 5.3L, & 6.0L (Introduction)) >> Repair Instructions >> Ignition Coil(s) Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the ignition coil.
    2. Fig 1: View Of Ignition Coils & Spark Plug Wires
    GM339300Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the ignition coil bolts.

    Tighten:  Tighten the bolts to 8 N.m (71 lb in).

    3. Fig 2: View Of Ignition Coil Mounting Bolts
    GM344167Courtesy of GENERAL MOTORS CORP.
  3. If equipped with RPO HP2, position the cable (w/bracket) and install the 3-phase cable bracket to the studs.
  4. Install the 3-phase cable bracket nuts (2).

    Tighten:  Tighten the nuts to 15 N.m (11 lb ft).

    5. Fig 3: 3-Phase Cable Bracket & Nuts
    GM1237062Courtesy of GENERAL MOTORS CORP.
  5. If equipped with RPO HP2, install the 3-phase cable to the SGCM.
  6. Install the 3-phase cable nuts to the SGCM.

    Tighten:  Tighten the nuts to 9 N.m (80 lb in).

  7. Install the SGCM cover and bolts.

    Tighten:  Tighten the bolts to 9 N.m (80 lb in).

    8. Fig 4: View Of SGCM, Cover & Bolts
    GM1237061Courtesy of GENERAL MOTORS CORP.
  8. If equipped with RPO HP2, position the auxiliary heater water pump and install it onto the studs.
  9. Install the auxiliary heater water pump bracket bolts.

    Tighten:  Tighten the bolts to 15 N.m (11 lb ft).

    10. Fig 5: Auxiliary Heater Water Pump, Bracket & Bolts
    GM1285626Courtesy of GENERAL MOTORS CORP.
  10. Connect the ignition coil electrical connector.
    11. Fig 6: View of Ignition Coil Harness Connector
    GM339299Courtesy of GENERAL MOTORS CORP.
  11. Install the spark plug wire to the ignition coil.
    12. Fig 7: View Of Spark Plug Wires At Ignition Coil
    GM344169Courtesy of GENERAL MOTORS CORP.
  12. If equipped with RPO HP2, connect the ESB. Refer to Energy Storage Box (ESB) Service Disconnect/Connect (5.3L Engine w/RPO HP2) in Engine Electrical.
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