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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 981 (Battery, Charging System & Starting System) >> Repair Instructions >> Energy Storage Box (ESB) Carrier Replacement (5.3L Engine w/RPO HP2) >> Removal Procedure

Removal 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. Remove the energy storage box (ESB) trim cover. Refer to Energy Storage Box (ESB) Trim Cover Replacement (5.3L Engine w/RPO HP2) .
  2. Disconnect the ESB. Refer to Energy Storage Box (ESB) Service Disconnect/Connect (5.3L Engine w/RPO HP2) .
  3. Remove the 42-volt positive/negative cable retainer nuts, and retainer.
    4. Fig 1: View Of 42-Volt Positive/Negative Cable Retainer & Nuts (5.3L Engine w/RPO HP2)
    GM1237047Courtesy of GENERAL MOTORS CORP.
  4. Remove the red connector position assurance (CPA) retainer from the 42-volt connector.
  5. Disconnect the 42-volt positive/negative cable electrical connector (4).
  6. Disconnect the 120-volt AC electrical connector (3).
  7. Remove the ground strap nut (1).
  8. Remove the ground straps from the stud (2).
    9. Fig 2: View Of 42-Volt Positive/Negative Cable Electrical Connector, AC Electrical Connector, Ground Strap & Stud
    GM1237048Courtesy of GENERAL MOTORS CORP.
  9. Disconnect the 12-volt harness electrical connector on the passenger side.
  10. Disconnect the low voltage cable electrical connector (1) on the driver side of the ESB.
  11. Remove the retaining clip (2) from ESB carrier.
    12. Fig 3: View Of Low Voltage Cable Electrical Connector & Retaining Clip (5.3L Engine w/RPO HP2)
    GM1462971Courtesy of GENERAL MOTORS CORP.
  12. Remove the nuts that retain the ESB carrier to the floor.
    13. Fig 4: View Of ESB Carrier To Floor Nuts (5.3L Engine w/RPO HP2)
    GM869219Courtesy of GENERAL MOTORS CORP.
  13. Reposition the ESB in order to disconnect the HVAC duct from the ESB.
  14. With the aid of an assistant, remove the ESB carrier.
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