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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 955 (Battery, Charging System & Starting System) >> Repair Instructions >> Energy Storage Box (ESB) Battery 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.
IMPORTANT:
  • If one battery fails testing, replacement of that specific battery is required. If two of the three batteries fail testing, replacement of all three batteries is required.
  • If replacement of all three batteries is required, the technician MUST perform the (Reset Battery Total hrs.) procedure with the scan tool via BECM Output Controls.
  1. Perform the battery pack service charge procedure. Refer to Battery Pack Service Charge - HP2 .
  2. Remove the energy storage box (ESB) intermediate cover. Refer to Energy Storage Box (ESB) Intermediate Cover Replacement (5.3L Engine w/RPO HP2) .
  3. If necessary, remove the battery cut-off switch. Refer to Energy Storage Box (ESB) Cut Off Switch Replacement (5.3L Engine w/RPO HP2) .
  4. Disconnect the battery resistor electrical connectors (1) from the appropriate battery.
    5. Fig 1: View Of Battery Resistor Connectors, Power Cable & Nut (5.3L Engine w/RPO HP2)
    GM1335904Courtesy of GENERAL MOTORS CORP.
  5. Disconnect the battery thermistor electrical connectors from the appropriate battery.
  6. If necessary, remove the power cable nuts (1) from battery 1 and battery 2.
  7. Remove the power cable (3) from battery 1 and battery 2.
    8. Fig 2: View Of Battery Resistor, Power Cable & Nuts (5.3L Engine w/RPO HP2)
    GM1403626Courtesy of GENERAL MOTORS CORP.
  8. Remove the battery resistor from the battery 1 positive terminal.
  9. If necessary, cut the tie straps (1) securing the power cables to the ESB.
  10. Remove the power cable nuts (3) from battery 2 and battery 3.
  11. Remove the power cable (2) from battery 2 and battery 3.
    12. Fig 3: View Of ESB Power Cable, Tie Straps & Nuts (Battery 2 To Battery 3) (5.3L Engine w/RPO HP2)
    GM1338110Courtesy of GENERAL MOTORS CORP.
  12. Remove the battery resistor from the battery 3 negative terminal.
  13. If necessary, remove the power cable nut (1) from battery 3.
  14. Remove the power cable (3) from battery 3.
    15. Fig 4: View Of High Current Connector Power Cable & Nuts (5.3L Engine w/RPO HP2)
    GM1338109Courtesy of GENERAL MOTORS CORP.
  15. Remove the battery resistor from the battery 3 positive terminal.
  16. Disconnect the battery vent hose(s) from the appropriate battery.
    17. Fig 5: View Of Battery Vent Hose (5.3L Engine w/RPO HP2)
    GM1403623Courtesy of GENERAL MOTORS CORP.
  17. If necessary, disengage the retainers securing the battery vent hose.
  18. Remove the battery vent cap (2) from the appropriate battery.
    19. Fig 6: View Of Battery Vent Cap (5.3L Engine w/RPO HP2)
    GM1470609Courtesy of GENERAL MOTORS CORP.
  19. Remove the appropriate battery hold down bracket nut.
  20. Remove the appropriate battery hold down bracket.
    21. Fig 7: View Of Battery Hold Down Bracket & Nut
    GM1403638Courtesy of GENERAL MOTORS CORP.
  21. Install J 43679  , to the lifting points on the appropriate battery.
    22. Fig 8: View Of J43679 (5.3L Engine w/RPO HP2)
    GM1338829Courtesy of GENERAL MOTORS CORP.
  22. Remove the appropriate battery.
    23. Fig 9: View Of Battery (5.3L Engine w/RPO HP2)
    GM1403640Courtesy of GENERAL MOTORS CORP.
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