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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) Fan 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) fuse power cable. Refer to Energy Storage Box (ESB) Fuse Power Cable Replacement (5.3L Engine w/RPO HP2) .
  2. Remove the ESB power cable - battery 2 to battery 3. Refer to Energy Storage Box (ESB) Power Cable Replacement - Battery 2 to Battery 3 (5.3L Engine w/RPO HP2) .
  3. Disconnect the outlet duct from the ESB duct.
  4. Disconnect the battery vent tube from the fan duct.
  5. Disconnect the fan electrical connector.
  6. Remove the fan screws.
  7. Remove the push pin fasteners.
  8. Remove the screws attaching the air duct hose to the ESB.
  9. Remove the fan and air duct hose.
    10. Fig 1: View Of Fan & Air Duct Hose (5.3L Engine w/RPO HP2)
    GM1403621Courtesy of GENERAL MOTORS CORP.
  10. If necessary, remove the screws (1) attaching the air duct hose (2) to the fan (3).
  11. If necessary, remove the air duct hose (2) from the fan (3).
    12. Fig 2: View Of Air Duct Hose, Fan & Screws (5.3L Engine w/RPO HP2)
    GM1335910Courtesy of GENERAL MOTORS CORP.
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